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Ornithogaloideae Have Been Intensively Reviewed In 314 Bothalia 41,2 (2011) cations should be kept in mind (e.g. Heath et al. 2008). KLOPPER, R.R., CHATELAIN, C., BÄNNINGER, V., HABASHI, C., There is an obvious need for a well-sampled molecular STEYN, H.M., DE WET, H.C., ARNOLD, T.H., GAUTIER, L., SMITH, G.F. & SPICHIGER, R. 2006. Checklist of the flower- phylogenetic analysis that includes Prototulbaghia and ing plants of sub-Saharan Africa. An index of accepted names more Tulbaghia species, together with other members of and synonyms. Southern African Botanical Diversity Network the Alliaceae, to test proposed generic demarcations and Report No. 42: 684, 685. SABONET, Pretoria. evolutionary trends in the family. MAHLBERG, P.G. 1993. Laticifers: an historical perspective. Botani- cal Reviews 53: 1–23. For the description of Prototulbaghia siebertii, see MANN, L.K. 1959. The Allium inflorescence: some species of the Sec- tion Molium. American Journal of Botany 46: 730–739. Vosa et al. 2011. Newly observed features are: NGUYEN, N.H., DRISCOLL, H.E. & SPECHT, C.D. 2008. A molecu- lar phylogeny of the wild onions (Allium; Alliaceae) with a focus Leaves have a row of tiny translucent teeth adpressed on the western North American centre of diversity. Molecular toward the distal abaxial part below the apex; laticifers Phylogenetics and Evolution 47: 1157–1172. present. Spathe valves subtend the inflorescence when the SIEBERT, S.J., VOSA, C.G., VAN WYK, A.E. & MULLER, H. 2008. flower scape emerges, gradually drying off. Flower scape Prototulbaghia (Alliaceae), a new monotypic genus from is covered by short, whitish, glandular hairs; keel present Sekhukhuneland, South Africa. Herbertia 62: 76–84. VAN WYK, A.E. & SMITH, G.F. 2001. Regions of floristic endemism in towards the base, single, persistent, ridge-like, with trans- southern Africa. A review with emphasis on succulents. Umdaus lucent teeth. Flowers are fugacious. Perianth segments Press, Hatfield, Pretoria. are light green in the lower half; inner segments are 4.3 VOSA, C.G. 1961. A modified aceto-orcein method for pollen mother mm wide in the middle. Gynoecium has 2–4 ovules per cells. Caryologia 14: 107–110. VOSA, C.G. 1966. Chromosome variation in Tulbaghia. Heredity 21: locule. Capsule has a withered style on top. 305–312. VOSA, C.G. 1972. Two-track heredity: differentiation of male and female meiosis in Tulbaghia. Caryologia 25: 275–281. ACKNOWLEDGEMENTS VOSA, C.G. 1975. The cytotaxonomy of the genus Tulbaghia. Annali di Botanica (Roma) 34: 47–121. The North-West University and University of Pretoria VOSA, C.G. 2000. The revised cytotaxonomy of the genus Tulbaghia. provided financial support. Caryologia 53: 83–112. VOSA, C.G. 2007. Prototulbaghia, a new genus of the Alliaceae fam- ily from the Leolo Mountains in Sekhukhuneland, South Africa. Caryologia 60: 273–278. REFERENCES VOSA, C.G. 2009. An updated and illustrated taxonomic synopsis of the genus Tulbaghia (Alliaceae). Herbertia 63: 208–219. ARCHER, C. 2003. Alliaceae. In G. Germishuizen & N.L. Meyer, VOSA, C.G., VAN WYK, A.E., SIEBERT, S.J. & CONDY, G. (Artist). Plants of southern Africa: an annotated checklist. Strelitzia 14: 2011. Prototulbaghia siebertii. Flowering Plants of Africa 62: 956, 957. National Botanical Institute, Pretoria. 22–28, t. 2264. BURT, A., BELL, G. & HARVEY, P.H. 1991. Sex differences in recom- bination. Journal of Evolutionary Biology 4: 259–277. C.G. VOSA*, S.J. SIEBERT** and A.E. VAN WYK† FAY, M.F. & CHASE, M.W. 1996. Resurrection of Themidaceae for the Brodiaea alliance, and recircumscription of Alliaceae, Amaryl- lidaceae and Agapanthoideae. Taxon 45: 441–451. * Author for correspondence: Linacre College, Oxford, United King- FRIESEN, N., FRITSCH, R.M. & BLATTNER, F.R. 2006. Phylogeny dom & Department of Biology, University of Pisa, 56126 Pisa, Italy. and new intrageneric classification of Allium (Alliaceae) based E-mail: [email protected]. on nuclear ribosomal DNA ITS sequences. Aliso 22: 372–395. ** A.P. Goossens Herbarium, School of Environmental Sciences and HEATH, T.A., HEDTKE, S.M. & HILLIS, D.M. 2008. Taxon sampling Development, North-West University, Private Bag X6001, 2520 Potch- and the accuracy of phylogenetic analyses. Journal of Systemat- efstroom, South Africa. E-mail: [email protected]. ics and Evolution 46: 239–257. † H.G.W.J. Schweickerdt Herbarium, Department of Plant Science, HUNZIKER, J.H. & SCHAAL, B.A. 1983. Isozyme variation in diploid University of Pretoria, 0002 Pretoria. E-mail: [email protected]. tropical and octoploid subtropical-temperate species of Bulnesia. za. The Journal of Heredity 74: 358–360. MS. received: 2010-05-28. HYACINTHACEAE ALBUCA GARIEPENSIS (ORNITHOGALOIDEAE), A NEW SPECIES OF A. SUBGEN. NAMIBIOGALUM FROM GORDONIA, SOUTH AFRICA, AND A. PRASINA TRANSFERRED TO ORNITHOGALUM INTRODUCTION Neopatersonia Schönland, leaving Dipcadi Medik. and Pseudogaltonia (Kuntze) Engl. as the remaining gen- Generic limits in Hyacinthaceae: Ornithogaloideae era in the subfamily. In this circumscription, Albuca have been intensively reviewed in recent years using is distinguished from Ornithogalum by flowers with molecular techniques (Stedje 1998; Pfosser & Speta thick-textured, whitish or yellowish tepals with a broad, 1999; Manning et al. 2004, 2009; Martínez-Azorín et green or brown longitudinal band on the adaxial surface al. 2011). The broad patterns of phylogenetic relation- associated with 3–5 mostly simple, medially aggre- ships in the subfamily are now clear but various options gated veins (Manning et al. 2009). In Ornithogalum, the exist for the translation of these patterns into a generic tepals are thin- or thick-textured with a narrow or indis- taxonomy (Manning et al. 2009; Martínez-Azorín et al. tinct median band and veins not tightly aggregated in 2011). A recent solution, followed here, provides for the the middle of the tepals, and the outer veins are often ± expansion of Albuca L. to include Ornithogalum sub- branched. gen. Osmyne (Salisb.) Baker and O. subgen. Urophyllon (Salisb.) Baker (Manning et al. 2009). Ornithogalum is Several collections of narrow-leaved plants from the consolidated to include the genera Galtonia Decne. and middle reaches of the Orange River in Northern Cape, Bothalia 41,2 (2011) 315 with relatively short, pyramidal racemes of green- acute, fleshy, dull bluish green. Inflorescence usually banded flowers and relatively large, depressed-globose solitary but up to 3 from a bulb, subpyramidal, densely or cordate capsules, have remained unnamed until now 8–25-flowered, 30–80 mm long at flowering, elongating or have been identified as Ornithogalum tenuifolium slightly and ± cylindrical in fruit, scape green and 1.5– subsp. aridum Oberm. [now Albuca virens subsp. arida 3.0 mm diam. at ground level but subterranean portion (Oberm.) J.C.Manning & Goldblatt]. Their large cap- tapering strongly and white; bracts lanceolate-aristate, sules, however, preclude any association with A. virens, lowermost up to 20 × 3 mm and uppermost ± 7 × 2 mm, which has smaller, ovoid capsules, and it is now clear apex often slightly coiled, whitish and submembranous that they represent an undescribed species, which we when young but becoming papery; pedicels ± spread- describe here as A. gariepensis after the Khoisan name ing, (5–)8–10(–15) mm long. Flowers held horizontally, for the Orange River, known to earlier inhabitants of the rotate, 14–20 mm diam., faintly scented of lemon-coco- region as the gariep or Great River. nut; tepals biseriate with outer series overlapping inner, free, suberect in basal 1.5–2.0 mm then spreading, white Collections at KMG, NBG, PRE and SAM, the main with green keels adaxially, outer tepals oblong-elliptical, herbaria with good representation of collections of 7–10 × 2.5–3.0 mm, slightly keeled apically and peni- Northern Cape species, were consulted for records of the cillate, with 3 centrally congested veins, inner tepals new species (herbarium acronyms after Holmgren et al. elliptical, 7–10 × 3.0–3.5 mm, concave apically and 1990). penicillate, with 3 centrally congested veins. Stamens free, erect; filaments 4–5 mm long, two thirds as long as In addition, examination of herbarium specimens tepals, verruculose, both series with quadrate expansion of Ornithogalum prasinum Ker Gawl., which was in basal 1.5 mm, outer expansion ± 1 mm wide, inner transferred to Albuca by Manning et al. (2009) on the 1.5 mm wide; anthers versatile, ± 2 mm long at anthe- strength of its supposedly close relationship to O. sein- sis, pale creamy yellow. Ovary ovoid and shortly stipi- eri (Engl. & K.Krause) Oberm. (now A. seineri (Engl. & tate, ± 3 mm long, strongly 3-angled, green; style erect, K.Krause) J.C.Manning & Goldblatt, reveals that it lacks tapering, 3-angled, ± 3 mm long, acute with trigonous, the perianth features that are diagnostic of Albuca. This, papillate stigma, green in lower half and white distally. combined with its karyology with basic chromosome Capsule depressed-cordate in outline, deeply 3-lobed, number x = 8, dictates its transfer back to the genus 10–12 × 15–20 mm. Seeds discoid, 5–8 mm diam., col- Ornithogalum, where its large, retuse capsules suggest a liculate, glossy black. Flowering time: January to early relationship with O. xanthochlorum Baker. April. Figures 20; 21. Distribution and ecology: Albuca gariepensis seems TAXONOMY to be restricted to the central portion of the Orange River drainage basin in northeastern Bushmanland, where it Albuca gariepensis J.C.Manning & Goldblatt sp. has been collected in a region bounded by the towns of nov. Kakamas, Upington and Kenhardt (Figure 22). The spe- Geophyta decidua 0.03–0.20 m alta, foliis (4)5–8(9) cies has been recorded from calcrete plains and sandy racemum duplo ad sexies longior linearibus pauciter flats, often in slight washes or drainage lines where rotatis vel ad apicem tortis canaliculatis 70–200 × 1–4 seasonal soil moisture levels are higher. A. gariepensis mm, racemo subpyramidalo dense 8–25-florum, 30–80 appears to be endemic to the Bushmanland Bioregion mm longo, bracteis lanceolato-aristatis, inferioribus ad of the Nama-Karoo Biome, primarily in Bushmanland 20 × 3 mm submembranaceis ad papyraceis, pedicelis Arid Grassland (Mucina & Rutherford 2006).
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