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Cassiinae pt 1 NY-Botanical_gardens_Vol. 35_1 - Copy.pdf - Antbase

Cassiinae pt 1 NY-Botanical_gardens_Vol. 35_1 - Copy.pdf - Antbase

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1982] CASSIINAE—SENNA 423<br />

Key to the Varieties of S. neglecta<br />

1. Fls small, the longer sepals 5-7.5(-8) mm, the longest petal 9-13 mm.<br />

2. Lower face of lfts pilosulous overall, the upper face nearly always puberulent, exce<strong>pt</strong>ionally<br />

glabrate, the margin in any case revolute; s.-e. Brazil, s.-ward from Parana, and<br />

apparently locally disjunct in s. Espirito Santo; stipules 2.5^.5 mm.<br />

137a. var. neglecta (p. 423).<br />

2. Lower face of lfts pilosulous only in distal basal angle of midrib, the upper face glabrous,<br />

the margin plane; local in Rio de Janeiro (Sa. dos Orgaos) and Minas Gerais (Sa. da<br />

Caraga); stipules 5-9 mm. 137c. var. oligophylla (p. 424).<br />

1. Fls larger, the longer sepals 8.5-11 mm, the longst petal 14-19 mm.<br />

3. Lower face of lfts pilosulous overall; pod ±8-10 mm wide; n.-e. Minas Gerais and s.-e.<br />

Bahia. 137b. var. grandiflora (p. 423).<br />

3. Lower face of lfts pilosulous only in distal basal angle of midrib; pod ± 14 mm wide; s.<br />

Espirito Santo (Furno Grande). 137d. var. furnicola (p. 425).<br />

137a. Senna neglecta (Vogel) Irwin & Barneby var. neglecta. Cassia neglecta<br />

Vogel, 1836, I.e., sens, strict.—". . . in Expeditione Speculatoria Romanzoffiana<br />

. . . Brasilia," the data expanded in Syn. Gen. Cass. 32.<br />

1837.—". . . in Ins. St. Catharinae . . ."—Holotypus, collected by<br />

Adelbert von Chamisso on Kotozebue's exploration on the Rurik at<br />

or near the present Florianopolis, Santa Catarina, XII. 1815 (fl, fr),<br />

tB; neoholotypus, former isotypus, LE! = <strong>NY</strong> Neg. 10489.<br />

Cassia neglecta sensu Bentham, 1870, p. HI, exclus. pl. Selloana atque var. acuminata quae<br />

sunt prima S. oblongifolia Vog. secunda S. hirsuta var. acuminata.<br />

Lfts 4-5 pairs, at apex broadly to narrowly triangular-acute or obtuse mucronulate,<br />

softly pUosulous beneath with loosely incurved hairs up to 0.3-0.7 mm,<br />

above minutely puberulent or exce<strong>pt</strong>ionally glabrous, the margin revolute; tertiary<br />

venulation of upper face weak or immersed; fl-buds pUosulous; sepals up<br />

to 5-7.5(-8) mm; longer petals 9-13 mm; pod 8-13 x 0.75-1 cm; seeds ±4.5-<br />

5 X 2-3 mm, the areole ±3 x 1 mm.—Collections: 31.—Fig. 11 (androecium).<br />

Disturbed woodland, hedges and waste places, ascending from the coastal lowlands<br />

up to 1200 m on the Ribeyra-Igacu divide, scattered along the seaward<br />

slope of Serra do Mar and the uplands adjacent to the west between 25° and 3rS<br />

in e. Parana, Sta. Catarina and Rio Grande do Sul, BrazU; apparently isolated<br />

within the Tropics on the lower slopes of Sa. do Caparao near 20°30'S on the<br />

boundary between Minas Gerais and Espirito Santo; an old report from Argentina<br />

(Tucuman) is based probably on mislabeUed spms.—Fl. I-IV(-V).<br />

The main, extratropical range of var. neglecta appears very natural and continuous,<br />

and we feel confident that Bentham's record from Argentina, which has<br />

not been confirmed and is not quoted by Burkart (1952), is based on a mislabehed<br />

specimen. This plant of Tweedie (K) is indeed ticketed Tucuman,' but the col­<br />

lector was in coastal Santa Catarina and Rio Grande do Sul in 1832 and may weh<br />

have encountered S. neglecta in this region. The single record from Sa. de Ca­<br />

parao (Irwin 2807, K, <strong>NY</strong>) is disconcerting; for phytogeographic regions one<br />

would expect there var. furnicola found on the heights of neighboring Furno<br />

Grande, but the plant has the pubescence, venation, smah flower and relatively<br />

narrow pod of genuine var. neglecta. The population may, however, be an ele­<br />

ment of the long-recognized rehctual flora of the Serra.<br />

137b. Senna neglecta (Vogel) var. grandiflora Irwin & Barneby, var. nov., a var.<br />

neglecta praesertim florum manheste majorum sepalis 8.5-11 (nee 5-8)<br />

mm petahsque 14-19 (nee 9-13) mm usque longis, fohohsque utrinque<br />

(nee dorso tantum) venulosis diversa.—BRAZIL. Minas Gerais: ao

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