Artigo Revisado por pares

Notes on Malesian Fabaceae (Leguminosae-Papilionoideae) 4. Millettia chrysamaryssa, a New Species from Peninsular Malaysia

1999; Missouri Botanical Garden Press; Volume: 9; Issue: 3 Linguagem: Inglês

10.2307/3391722

ISSN

1945-6174

Autores

F. Adema,

Tópico(s)

Phytochemistry and Biological Activities

Resumo

A new species, Millettia chrysamaryssa Adema from Peninsular Malaysia, is described. During the preparation of an account of Millettia Wight & Arnott for Flora Malesiana, a new species was found in the material identified as Millettia sericea (Ventenat) Wight & Arnott. Millettia sericea, although restricted to Sumatra, Peninsular Malaysia, and Java, has always been seen as a variable species. Various forms and varieties have been described (Miquel, 1855, 1860; Prain, 1897; Dunn, 1912). However, these forms differ only slightly among each other, and the need to discriminate them has not been substantiated. A significant group of plants, differing in indumentum, flowers, fruits, and seeds, has consistently been overlooked. These plants, all from Peninsular Malaysia, are described here as a new species. Millettia chrysamaryssa Adema, sp. nov. TYPE: Malaysia. Perak: Padang, Selim river, 12 Apr. 1978, Maxwell 78-107 (holotype, L; isotypes, AA, SINU not seen). Figure 1. Liana. Axes brunneo-velutini. Folia 5-15-foliolata. Folioli elliptici ad anguste obovati raro anguste ovati infra dense sericei aurei vel argentei nitentes. Stipellae desunt. Pseudo-racemi axillares. Vexillum sine callis. Stamina monadelpha vel diadelpha fenestris basalibus. Legumina applanata late ligulata extus brunneo-velutina. Semina applanata oblonga. Lianas. Twigs terete, 3-9 mm diam., dark brown velvety. Leaves 5-15-foliolate (mostly 13). Stipules triangular, ca. 5 x 3 mm, caducous. Petioles 410.5 cm long, terete, brown velvety; rachis 5-23.5 cm long, terete, brown velvety; pulvinus 7-20 mm long. Stipels absent. Leaflets: terminal elliptic to narrowly obovate, 7-19 x 2-5 cm, length:width ratio 2.5-3.8, base cuneate to rounded, apex acuminate, acumen 4-20 mm long, above glabrous, below densely silvery or golden sericeous, midrib slightly sunken above, nerves flat or slightly sunken above, 7-11 per side, 5-25 mm apart; lateral mostly as the terminal, narrowly ovate to narrowly obovate, 4-19 x 1-5 cm, length:width ratio 2.5-4.2; pulvinus 5-13 mm long. Inflorescences axillary, pseudoracemes, often apically clustered, or pseudopanicles, 18-37 cm long, peduncle 3-13 cm long, brown velvety. Bracts to the brachyblasts ovate, 2.5-3 x 1.2-2 mm, adaxially velvety, abaxially glabrous. Brachyblasts 5-10-flowered. Bracts to the flowers broadly ovate, 1.7-1.9 x 1.1-1.2 mm, adaxially velvety, abaxially glabrous. Pedicels 5-9 mm long. Bracteoles at the base of the calyx, ovate, 1.2-1.9 x 0.6-1.2 mm, adaxially velvety, abaxially glabrous. Calyx 5-7 mm long, tube 4-5 mm long, adaxially velvety, abaxially glabrous, slightly obliquely bilabiate, lower lip three lobes somewhat longer than upper two lobes. Corolla papilionaceous, white or pink, or yellowish white and violet at the base, standard often with a light green blotch abaxially near the base. Standard: claw 2.54 mm long, adaxially sericeous; blade orbicular, 10-13 x 9-14 mm, emarginate, adaxially sericeous, abaxially sericeous at the very apex, basally with auricles ca. 1 mm long, callosities absent. Wings: claw 4-5 mm long; blade narrowly ovate to elliptic, 9-11 x 3.5-4.5 mm, with some hairs at the base and auricles, dorsal auricles 0.5-1 mm NovoN 9: 289-291. 1999. This content downloaded from 207.46.13.128 on Tue, 06 Sep 2016 05:39:11 UTC All use subject to http://about.jstor.org/terms

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