JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Royal Botanic Gardens, Kew and Springer are collaborating with JSTOR to digitize, preserve and extend access to Kew Bulletin. This contribution contains a revision of the genus Cyrtorchis and reclassification of the genera Diaphananthe and Rhipidoglossum, and of Holothrix and Deroemera. A new section of Habenaria is proposed and 12 new species belonging to various genera are described. There are also several taxonomic and nomenclatural notes. The type specimens of the new species are in the Kew Herbarium unless stated otherwise. DEROEMERA RCHB.F. AND HOLOTHRIX A. RICH. The genus Deroemera was founded by Reichenbach in 1852 (De Poll. Orch. 29) on plants collected by Schimper in Ethiopia. Later, when dealing with the genus Holothrix A. Rich. (Otia Bot. Hamburg. I 19: 1881) he merged his genus with Richard's. In 1895, however, Rendle and Schlechter resuscitated the genus Deroemera, spelling it incorrectly Deroemeria (Journ. Bot. Lond. 33, 277), stating that it differed from Holothrix in the distinct habit and the greater union of the labellum with the column. Rolfe adopted the genus in the 'Flora of Tropical Africa' (7, 195-197: 1898) and gave the same characters for distinguishing it from Holothrix. Judging from Rendle and Schlechter's comments the 'distinct habit' consisted in the occurrence of sheaths or cataphylls on the glabrous scape, these being said to be absent from the hairy scapes in Holothrix.It is interesting to note that in Schlechter's revision of Holothrix, published only a short time after his re-adoption of Deroemera, there are included four species which are said to possess cataphylls or sheaths on the scape, viz.:-H. schlechteriana Kraenzl., H. grandiflora (Sond.) Rchb.f., H. longiflora Rolfe and H. burchellii (Lindl.) Rchb.f. In two of these species, H. schlechteriana and H. burchellii, the scape is glabrous in the upper part where the sheaths occur, whereas it is hairy at the base where there are no sheaths. It appears, therefore, that the presence or absence of sheaths, coupled with or without a glabrous or pubescent scape, can hardly be used as a character for separating the two genera, and Rendle and Schlechter's 'distinct habit' falls to the ground. This view is supported by the existence of H. randii Rendle, which is clearly a Deroemera on all external characters, but which closely resembles several species of Holothrix in perianth characters.There still remains, however, the supposed greater union of the labellum with the column, also mentioned by Rendle and Schlechter and by Rolfe. On examination of material preserved in liquid I entirely fail to find this distinction. The degree of union admittedly is greater in some species than in others but there se...
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Royal Botanic Gardens, Kew and Springer are collaborating with JSTOR to digitize, preserve and extend access to Kew Bulletin. . The specimens collected by Dr. Jaeger were kindly sent to me for determination and contain numerous extensions of range of species into Sierra Leone as well as the new species. The type specimens of all the species described in this paper are in the Kew Herbarium. Orchis maderensisSummerhayes, nom. nov. Orchis foliosa Solander ex Lowe (Prim. Flor. Mader.) in Trans. Cambr. Phil. Soc. 4, 13 (1831), non Swartz. The trivial name foliosa cannot be used for this well-known Madeiran species owing to the earlier Orchis foliosa Swartz published in 1800. I have therefore suggested the trivial name maderensis which has the advantage of indicating the native country of the species. Brachycorythis (? Eubrachycorythis) paucifolia Summerhayes, sp. nov. ; affinis B. angolensi (Schltr.) Schltr. et B. sceptro Schltr., ab illa foliis majoribus, floribus fere duplo majoribus, labello distincte trilobato, ab hac foliis paucioribus latioribusque, bracteis flores non superantibus, floribus majoribus, petalis latioribus, labello angustiore trilobato satis distinguitur.Herba terrestris saepius elata, 20-55 cm. alta, glaberrima. Radices numerosae, leviter flexuosae, carnosae, circiter, 5 mm. diametro, laxe tomentosae. Caulis erectus, sublaxe paucifoliatus, basi 5-10 mm. diametro. Folia 8-12; 2-3 infima vaginiformia, obtusa; 4-6 intermedia suberecta vel subpatentia, lanceolata, oblongo-lanceolata vel elliptico-lanceolata, apice obtusa vel acuta, apiculata, 5-17 cm. longa, 1 5-3-5 cm. lata, ? conduplicata ; 2-3 superiora minora, lanceolata, acuta vel acuminata, 3-5 cm. longa, bracteis similia. Inflorescentia simplex vel rarius ramo brevi instructa, dense multiflora, 5-11 cm. longa, 3-5-5 cm. diametro ; bracteae foliaceae, lanceolatae, acuminatae, inferiores flores aequantes, superiores sensim decrescentiae. Flores pro genere inter majores, suberecti, de colore nil constat ; pedicellus cum ovarium 1-2 cm. longus. Sepalum intermedium elliptico-lanceolatum, obtusum vel rotundatum, 10 5-14-5 mm. longum, 6-7 mm. latum, concavum ; sepala lateralia oblique ovato-lanceolata, obtusa vel apiculata, 11-16.5 mm. longa, 4.75-7 mm. lata; sepala omnia quinquenervia, nervis transversis numerosis, marginibus breviter involutis. Petala valde oblique lateque ovata, obtusa vel acuta, basi margine antica valde dilatata, margine postica cum columna breviter adnata, 10.25-14 mm. longa, 7.25-8.75 mm. lata, 5-6-nervia, nervis exterioribus multo ramosis. Labellum basi
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