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

424 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. 35
lado da Rodovia BR-4, km 777 [=Jequetinonha valley in n.-w. Minas],
27.VI.1968 (fl, fr), R. P. Belem i769.—Holotypus, NY; isotypi, CE­
PEC, K, R, US.
Lfts elliptic-obovate or broadly oblanceolate, obtuse mucronulate, densely or
thinly pUosulous beneath with incumbent hairs ±0.3-0.5 mm, glabrous above,
the margin revolute, the tertiary venulation of either face subequahy prominulous;
fl-buds either densely yeUowish-pUosulous or subglabrous; sepals up to 8.5-11
mm; longer petals 14-19 mm; pod (little known) ±18 x 0.85 cm; ripe seeds not
seen.—Collections: 4.
Habitat not recorded, but someimes (typus) associated with hmestone out­
crops, apparently local on the Atlantic slope of the Brazilian Planalto between
the valleys of rios Jequetinonha and Mucuri in the s.-e. lobe of Bahia and adjoining
Minas Gerais (lat. ±16°-17°30'S).—Fl. V-VII.
Clearly distinguished from var. neglecta by the more ample perianth, although
the androecium is not proportionately increased. Our two collections from Minas
Gerais are alike in having densely pilosulous, almost velvety sepals, whereas in
our one from Bahia (Monte Pascoal near Pto. Seguro, Lanna & Castellanos 15201
2626, CEPEC, NY) the sepals are almost glabrous. The pod ofthe latter, possibly
distinct form, may provide a basis for segregation.
137c. Senna neglecta (Vogel) var. oligophyUa (Bentham) Irwin & Barneby, comb.
nov. Cassia oblongifolia var. oligophylla Bentham in Martius, Fl.
Bras. 15(2): HI. 1870.—". . . loco Brasiliae non indicato: Martius; in
Serra dos Orgaos prov. Rio de Janeiro: Gardner n. 5701."—Lectotypus,
Gardner 5701, K (hb. Benth.)! isotypus, K (hb. Hook.)! = NY
Neg. 1452; paratypus, Martius 727, M!
Lfts 4-5 pairs, elliptic or obovate- or oblong-elliptic, obtuse mucronulate, pubescent
only dorsally in the distal basal angle of midrib, the margin plane, the
tertiary and quaternary venulation sharply prominulous on both faces; fl-buds
thinly puberulent; perianth and androecium of var. neglecta; pod (httle known)
±(6.5 by abortion of ovules) 10 x 0.9-1 cm; testa of seed smooth.—Collections:
17.
Openings in wet forest associated with rock outcrops, cliffs and talus,
±(700)1100-1850 m, known certainly only from Sa. dos Orgaos and vicinity in
state of Rio de Janeiro and Sas. da Caraga and Ibitipoca in s.-centr. Minas Gerais
(to be sought elsewhere in Sa. da Mantequeira).—Fl. I-V(-?).
This highly locahzed variety has essentially the flower and pod of var. neglecta
but differs in the more sharply reticulate, more obtuse leaflets glabrous except
for a dorsal tuft of hairs in the forward basal angle of the midrib. The stipules,
known at present from too few examples, appear to be longer and the planemargined
leaflets tend to be more abruptly accrescent distally. Bentham misin­
terpreted the two flowering specimens available to him in 1870 as representing a
form of 5. oblongifolia, often superficially simUar in habh and fohage but radicaUy
different in having anthers horizontally truncate (not asymmetricaUy produced at
apex into a poUen-cup), in the erect style, in the turgid (not piano-compressed)
pod, and in the faciaUy unmarked seeds. The sometimes disturbingly similar and
moreover sympatric S. organensis, which has the same tuft of hairs on lower
face of the leaflets, has petiolar glands between, not below the leaflets, a pod
similariy compressed but only 8-14 (not at least 30)-ovulate, and again unmarked
seeds.