88,857 research outputs found
Kalanchoe benbothae Smith & Crouch 2021
No full text7. Kalanchoe benbothae Smith & Crouch (2021: 109) (Fig. 7) Type:— SOUTH AFRICA. KwaZulu-Natal province —2731 (Louwsburg): Vaalbank, (– CA), rocky grassland to the northeast of the town, sterile material collected in February 2017, flowered in cultivation in Durban, 2 June 2021, B . S. [Ben] Botha 1 (holotype PRU!). Treated in:—Smith & Crouch (2021: 109).Published as part of Smith, Gideon F., 2022, Of paddles, soup plates, and clubs: the taxonomy of the southern and southtropical African Kalanchoe sect. Raveta (Crassulaceae subfam. Kalanchooideae; Kalanchoe subg. Kalanchoe) and its constituent species, pp. 8-26 in Phytotaxa 568 (1) on page 21, DOI: 10.11646/phytotaxa.568.1.2, http://zenodo.org/record/718422
Kalanchoe winteri Gideon F. Sm., N. R. Crouch & Mich. Walters
No full text5. Kalanchoe winteri Gideon F.Sm., N.R.Crouch & Mich.Walters in Crouch et al. (2016: 219) (Fig. 5) Type:— SOUTH AFRICA. Limpopo province —2430 (Pilgrim’s Rest): Wolkberg, Thabakgolo Escarpment, Sedibeng sa Lebese Mountain, west of Strasburg, (– AD), 10 September 2000, P. J . D. Winter 4430 (holotype PRE!). Treated in:— Smith et al. (2019a: 62–69) and Smith et al. (2019b: 239–243).Published as part of Smith, Gideon F., 2022, Of paddles, soup plates, and clubs: the taxonomy of the southern and southtropical African Kalanchoe sect. Raveta (Crassulaceae subfam. Kalanchooideae; Kalanchoe subg. Kalanchoe) and its constituent species, pp. 8-26 in Phytotaxa 568 (1) on page 21, DOI: 10.11646/phytotaxa.568.1.2, http://zenodo.org/record/718422
Aloe nicholsii Gideon F. Sm. & N. R. Crouch 2010, spec. nov.
No full textAloe nicholsii Gideon F.Sm. & N.R.Crouch spec. nov. Aloe nicholsii a A. kraussii floribus parvioribus pruinosis infra virosis supra perspicue metallicosalmoneis, nec floribus citrinis vel luteis apicibus viridibus, differt. Praeterea a forma A. cooperi foliis non carinatis differt floribus perbrevioribus in racemo capitato densiore dispositis coloreque florum non aurantiaca. Type: Republic of South Africa, KwaZulu-Natal, 2831 (Nkandla): Near Babanango, in rocky grassland adjacent to the R68, 1,290 m, (–AC), 17-02-2010, N. Crouch 1270, (PRE, holo., NH iso.). Small to medium-sized, herbaceous, slowgrowing, succulent, perennial, grass aloe, total height excluding inflorescence ± 300–360 mm, usually clumped, up to 40 heads, sometimes solitary, a single head at mid-rosette up to 160 mm in diameter. Roots cylindrical when young, becoming fusiform with age, central portion 8(–10) mm in diameter. Stems short, stout, ± 60(–140) mm long, 20–45 mm in diameter. Leaves few, distichous becoming semi-rosulate, 9–15, not persistent when dry, narrowly linearattenuate, tapering to apex, 200–460 mm long, 20–53 mm broad at base, basally sheathing, flaccidly spreading; upper surface distinctly and consistently concave, canaliculate, mid-green to light yellowish green, occasionally with few scattered white spots towards base, smooth; lower surface convex, mid-green to light yellowish green, scattered white spots common towards base; margins with a coarse, faintly ivory-coloured edge, marginal teeth more or less absent, if present, tiny, widely spaced, harmless, triangular; ivory-coloured to greenish white, <0.5 mm long towards base of leaf, becoming increasingly smaller towards tip of leaf, 5–10 mm distant, ± unevenly and widely spaced; dry leaf sap translucent. Inflorescence an unbranched raceme, 300–460 mm tall, as tall as or exceeding the height of rosette; each rosette producing up to 3 racemes, peduncle sparsely sterile bracteate, denser towards apical part of inflorescence, bracts varying from thickened, somewhat fleshy, light yellowish green with very broad, white margins to light salmon-brown, papery, central part same colour as peduncle when succulent, many-nerved, 18–170 mm long, 10 mm broad at base, tapering to a sharp, harmless tip. Peduncle basally plano-convex, cylindrical above, 260–360 mm long, 6–8 mm broad at base, light yellowish green, dusty bloom lacking. Racemes densely capitate, the flowering portion 30–35 mm long, 50–60 mm in diameter; buds erect to suberect, congested at apex, lowest open flowers suberect to horizontal. Floral bracts amplexicaul around pedicel, large, light yellowish green, somewhat fleshy, to salmon-brown, papery, with 4–7 prominent mid-green or light brown nerves, 10–26 mm long. Pedicels 25–30 mm long. Flowers zygomorphic, unscented, small, 13–16 mm long, slightly stipitate at base, tubular-cymbiform, lightly pruinose, tricoloured, salmon-pink above, greenish below, tip extremity purplish-brown, enlarging towards throat and forming a very slightly open, distinctly upturned mouth; buds similar to open flowers, 5 mm in diameter in middle; buds and flowers not trigonously or cylindrically indented above ovary; outer segments larger than inner segments, lorate to long-triangular, free for most of their length, basally fused for ± 0.5–1.0 mm, free portion with a prominent central nerve, borders the same colour as tepal blade, acute, segment margins folded lengthwise, apex slightly incurved; inner segments narrower than outer, with yellowish white border and more obtusely spreading apex, free for most of their length. Stamens 6, hypogynous; filaments cylindrically thread-like to very slightly flattened, light yellow, 11–13 mm long, all 6 of ± equal length, not exserted; anthers small, 1.0 mm long, bright orange, versatile, included or only very slightly exserted. Ovary 3–5 mm long, 2 mm in diameter, light green; style short, 8 mm long, minutely capitate; stigma small, becoming exserted during female phase of flower. Fruit an erect, bright green, trilocular capsule, cylindrical, 17–19(–22) mm long, 9–10 mm in diameter, apically truncate, dry remains of tepals persisting around fruit for a long time, dehiscing loculicidally, chartaceous to woody when dry. Seeds, dark greyish brown, angled, laterally compressed, with off-white wing stretching around periphery of seed, 2.5–3.0 mm long. Flowering time January to March, peaking in February. Chromosome number unknown. (See Figures 1 and 3.) Habitat and conservation status Plants were collected in full sun in open rocky grassland of Northern Zululand Sourveld (SVl 22) (Mucina et al., 2006) at an altitude of ± 1,290 m, growing in a rocky, clay-loam substrate. Although low rock outcrops are present at the type locality the aloes were not observed to take particular refuge amongst these. Plants found growing in association with A. nicholsii were Syncolostemon parviflorus, Searsia dentata, Rhynchosia woodii and Ochna serrulata in the vicinity of low rocky sites, and Thunbergia atriplicifolia, Gladiolus ecklonii, Watsonia densiflora and Schizocarphus nervosus in more exposed grasslands. About 80 individual plants or clumps (Figure 3) were found at the type locality (Figure 4), occupying an area of approximately 2,000 m 2. This represents the full extent of the currently known population. An earlier record (Nichols s.n. NU) indicates that a decade ago small clumps were frequent along the R68 roadside in that region. However, four excursions along the R68 made during the past two flowering seasons failed to yield a single specimen; notably, the verge is now largely degraded. Although further populations may in time be found, particularly in the nearby Ophate Game Reserve, it would be prudent to presently regard the species’ Red List status as Data Deficient. Eponymy This species is named for Mr Geoff Nichols of South Africa (Figure 4), who made the first known collection of this new species, and who through initiating and establishing the Silverglen Nursery in Durban pioneered the conservation-through-cultivation of many endangered medicinal and rare plants of KwaZulu-Natal and Pondoland. Additional specimen examined 2831 (Nkandla): On road verge between Eshowe and Babanango (–AC), G. Nichols s.n. (NU), 14-2-1999.Published as part of Smith, Gideon F. & Crouch, Neil R., 2010, Aloe nicholsii Gideon F. Sm. & N. R. Crouch (Asphodelaceae): A new leptoaloe from KwaZulu-Natal, South Africa, pp. 103-106 in Bradleya 28 on pages 103-106, DOI: 10.25223/brad.n28.2010.a10, http://zenodo.org/record/786472
Utilising Located Functions to Model and Optimise Distributed Computations
No full textWith developments in Grid computing and Web based data storage the task of orchestrating computations is becoming ever more difficult. Identifying which of the available computation resources and datasets to use is not trivial: it requires reasoning about the problem itself and the cost of moving data to complete the computation efficiently. This paper presents a conceptual notation and performance model that enables e-researchers to reason about their computations and make choices about the best use of resources
Cotyledon mckayi N. R. Crouch & Gideon F. Sm. 2023
No full text<i>Cotyledon mckayi</i> N.R.Crouch & Gideon F.Sm. <i>sp. nov.</i> (Fig. 1A–D, F) <p> <b>Type</b>:— SOUTH AFRICA. KwaZulu-Natal province —2830 (Dundee): UMzinyati River, tributary of the Tugela River (–DA), on cliff ledges adjacent to river, 16 July 2023, <i>N. Crouch & A. McKay 1300</i> (holotype, mounted as two sheets, Herb. NU barcodes NU 0094575! and NU 0094576!).</p> <p> <b>Diagnosis</b>:—Plants of <i>C. mckayi</i> (Fig. 1B) are medium-sized to large, glabrous, perennial succulents with grey-green leaves having a characteristic purple-infusion, that can be separated from <i>C. orbiculata</i> var. <i>oblonga</i> (Fig. 2A) in presenting flowers with tubes that are not swollen about their middle but are rather subcylindrical and shorter (10–14 mm in length rather than 18–25 mm) and in having prominently channelled and keeled linear leaves (to 200 mm long) at maturity, rather than obovate to oblanceolate leaves to a maximum of 140 mm in length. <i>Cotyledon mckayi</i> differs from <i>C. barbeyi</i> (Fig. 2B) in its corolla tubes only very slightly bulging through the calyx lobes rather than prominently so, in tubes being subcylindrical rather than ampullaceous, in its shorter (to 3–4 mm) calyx lobes relative to those found in <i>C. barbeyi</i> (8–10 mm), in having corolla lobes that usually recurve rather than reflex, and in its squarish rather than oblong nectar scales bearing minutely repand and rounded rather than smooth cup-shaped apices.</p> <p> <b>Description</b>:—Perennial, erect to spreading to leaning, few-branched, succulent shrub to 450–750(–1600) mm tall. <i>Roots</i> fibrous. <i>Branches</i> 18–25 mm in diam., green at first, becoming greyish brown to grey with age, ascending to horizontally spreading, then gracefully curved upwards, later decumbent under weight of leafy portions, leaf scars obvious. <i>Leaves</i> sessile, grey-green, firm, somewhat leathery, succulent, glabrous, with waxy bloom; <i>blade</i> (120–)130–200 × 17–30 mm, purplish-infused, often more so towards the margin, linear-lanceolate when young, elongate-obovate to narrowly cymbiform at maturity; <i>adaxial surface</i> distinctly concave to more rarely planar, sometimes slightly recurved in terminal ⅕; <i>abaxial surface</i> distinctly convex, smooth; <i>margin</i> concolorous to often purple especially in upper ⅔, appearing cartilaginous, straight, continuous; <i>apex</i> acute, very shortly mucronate. <i>Inflorescence</i> an erect thyrse, 300–350 mm long, comprising 3–5 dichasia, each with few (5–7) pendulous flowers; <i>peduncle</i> (250–)270– 300(–320) mm long, glabrous, with waxy bloom, with 1 pair of bracts that is soon shed. <i>Pedicels</i> 16–25 mm long. <i>Flowers</i> pendulous; <i>buds</i> light green. <i>Calyx</i> green to strongly purple-infused, with slight white-waxy bloom, bloom easily rubbed off, cat claw-like clasping base of corolla tube. <i>Sepals</i> 5, 3–4 × 3–4 mm, basally fused for 1.0– 1.5 mm, deltoid-triangular. <i>Corolla</i> 20–24 mm long, cylindrical to slightly urceolate, marginally widest at base, very slightly bulging between calyx lobes, with waxy bloom externally, glabrous throughout except for small tufts of white hairs where filaments fused to tube; <i>corolla tube</i> (10–) 13–14 mm long, 7–8(–9) mm in diam., uniformly reddish orange or with alternating, longitudinal light green sections under low light conditions; <i>corolla lobes</i> 10–12 mm long, 4–5(–6) mm in diam., reddish orange, linear-lanceolate, recurved, sometimes fully rolled under, apically rounded-acute to acute, minutely mucronate. <i>Stamens</i> 10, in 2 obscure whorls, fused to corolla tube just below middle of tube; <i>filaments</i> free for 12 mm, light whitish green; <i>anthers</i> 3.6 × 1.2 mm, yellow pre- and post-anthesis, elliptic. <i>Pistil</i> consisting of 5 carpels, elliptic, bulged in centre; <i>carpels</i> 15.5 mm long, shiny mid-green, tapering upwards; <i>styles</i> 7–8 mm long, ± connivent to slightly spreading above; <i>nectar scales</i> 1.5 × 1.5 mm, uniformly light greenish yellow, squarish, vessellike turned upwards, minutely repand above, separate, arranged in broken ring. <i>Follicles</i> 15–16 mm long, shiny light green, enveloped in dry, white, purple-infused remains of corolla. <i>Seeds</i> not seen. <i>Chromosome number</i>: unknown.</p> <p> <b>Distribution and habitat</b>:— <i>Cotyledon mckayi</i> is so far only known from the valley of the UMzinyati River, and along a short section of the Tugela River downstream of its confluence with the UMzinyati, some 20 km east of Tugela Ferry, in central KwaZulu-Natal. This new species has been observed at five separate localities, with a known range of 18 km from north to south along the UMzinyati River valley. Plants occur singly along cliffside rock ledges of these two rivers, on mainly western aspects although plants are always found in the shade of surrounding vegetation.</p> <p> The entire known natural geographical distribution range (Fig. 3) of the species falls within the MaputalandPondoland Region of Endemism (Van Wyk & Smith 2001: 82–85), and further within the Greater Midlands Centre of Endemism recently recognised by Carbutt (2023). <i>Cotyledon mckayi</i> occurs in soils overlying dolomitic bedrock, at elevations of <i>ca</i>. 450–660 m, within savannah vegetation of Thukela Valley Bushveld (SVs 1) (Rutherford <i>et al</i>. 2006) (Fig. 1F). No localities within the known range are formally protected.</p> <p> <b>Flowering time</b>:— <i>Cotyledon mckayi</i> flowers mainly in the winter months, June to August in the southern hemisphere.</p> <p> <b>Eponymy</b>:— <i>Cotyledon mckayi</i> is named for Mr Andrew McKay (born 19 June 1968, Liverpool, England –) (Fig. 1G), a civil engineer, keen amateur field botanist, and succulent plant enthusiast. Aside from discovering this new <i>Cotyledon</i> species, he has additionally greatly increased our understanding of the distribution of the recently described <i>C. nielsii</i> within the province, which he has shown to extend in range from the Umkomaas River in the south through to the Sikoto River in the north, rather than being restricted to the eThekwini metropolitan region as earlier thought.</p>Published as part of <i>Crouch, Neil R. & Smith, Gideon F., 2023, Cotyledon mckayi (Crassulaceae subfam. Kalanchooideae), a new cremnophytic species from the central Tugela River Basin of KwaZulu-Natal, South Africa, pp. 184-192 in Phytotaxa 632 (2)</i> on pages 186-187, DOI: 10.11646/phytotaxa.632.2.8, <a href="http://zenodo.org/record/10438544">http://zenodo.org/record/10438544</a>
Dermot Astore (The reply of Kathleen Mavourneen) [music] /
No full text(H&R.1918) (Publisher number). For voice and piano.; Pl. no.: (H&R.1918); Publisher at address on item between 1866 and 1891.; "Dedicated to Miss Masson".; Also available online http://nla.gov.au/nla.mus-an10692618; Library's copy embossed: W.H. Paling, Pianoforte Depot, Sydney.Reply of Kathleen Mavournee
Dermot Astore (The reply of Kathleen Mavourneen) [music] /
No full textCover title.; Engraved.; "Dedicated to Miss Masson".; Also available online http://nla.gov.au/nla.mus-an9782821.Reply of Kathleen Mavournee
Kathleen Mavourneen [music] /
No full textFor voice and piano.; Cover title.; Also available online http://nla.gov.au/nla.mus-vn4510776
Kathleen Mavourneen, the grey dawn is breaking, the horn of the hunter is heard on the hill [first line]
No full textstrophicpiano and voiceMusic is duplicated in 093.111.Johns Hopkins University, Levy Sheet Music Collection, Box
093, Item 110Composed by F.N. Crouch
Kathleen mavorneen [music] /
No full textFor voice and piano.; Caption title.; Engraved.; Also available online http://nla.gov.au/nla.mus-an6617999; MUS: N, Hince 1/1860
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