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

398 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. 35
Rial Alberti, 1954, p. 20, fig. 7 (optima!); Lombardo, Fl. Arb. Uruguay ed. 2, 65, fig. 59.
1964; Burkart in Cabrera, Fl. prov. Buenos Aires 3: 449-450, fig. 140. 1967; Isely, 1975, p.
76, map 24 (s.-e. U.S.A.); Graf, Exotica ed. 9, 1036. 1978.
Erect or, with age and opportunity, sarmentose slender shrubs and treelets at
anthesis 0.8^ m, with terete, finely ribbed greenish-stramineous hornotinous and
fuscous-castaneous or nigrescent older (leafless) branches, except for often re­
siduaUy pubescent pulvinules, exceptionaUy for puberulent sepals and nearly al­
ways for Strigulose-pUosulous ovary glabrous throughout, the fohage duh pale
oUvaceous concolorous or almost so, the few-fld racemes at first axillary to and
not or scarcely longer than the subtending h, some later ones often forming a
terminal, shortly exserted corymbose panicle.
Stipules submembranous, narrowly linear-lanceolate 2-5 x 0.2-0.6(-0.7) mm,
pale green turning stramineous and dry, caducous before maturity of associated
h, absent from most mature fl and all fr spms.
Lvs 5.5-9.5 cm; petiole slender, including moderately dilated palhd or discol­
ored pulvinus (13-) 15-28 mm, at middle 0.35-0.6(-0.7) mm diam, bluntly 3-ribbed
laterally and dorsally, narrowly sulcate ventrally; rachis 6-27 mm, the longer (or
only) interfoholar segment 6-15 mm; gland between proximal pair of lfts stipitate
1.3-2 mm, the ovoid or lance-eUipsoid apiculate or obtuse head 0.25-0.6 mm
diam, a depauperate gland sometimes between second (but not the distal) pair;
pulvinules (0.8-) 1-2.2 mm; hts commonly 3 or 2-3, rarely in ah lvs exactly 2
pairs, accrescent distaUy, the distal pair lanceolate, lance- or narrowly oblong-
elUptic obtuse mucronulate or apiculate, less often subemarginate or deltately
subacute 25^7(-60) x (4.5-)5-12(-14) mm, (3.3-)3.5-5.6(-6.5) times as long as
wide, at obhque base varying with increasing breadth from cuneate to rounded,
the (mature) margin plane, the midrib and 9-14 pairs of camptodrome (with random
intercalary) secondary veins immersed or feebly prominulous on upper face,
sharply prominulous beneath/the tertiary venules usually invisible above, always
raised beneath, forming a loose reticulum.
Racemes 4-15(-18)-fld, the 1 or more expanded fls raised to or beyond level of
ascending, obhquely obovoid buds, the axis together with peduncle becoming
(1.5-)2-6(-7) cm; bracts submembranous pallid, narrowly lance-subulate 1-
4 X 0.25-0.6 mm, caducous as pedicel begins to elongate; mature pedicels (13-)
15-23 mm; hypanthium (not always externally differentiated) vase-shaped (1-)
1.2-2 mm; sepals submembranous brownish pale-margined, ovate or elliptic-obovate
obtuse not strongly graduated, the outermost 4-6 mm, the largest inner one
6-8.5 mm; petals glabrous short-clawed yehow drying brownish-yehow or stramineous
brown-veined, the vexiUar one either broadly obovate obtuse or flabellate-obovate
emarginate, the rest ahke obovate or the 2 abaxial ones narrower
and often a trifle longer, nidulating the long stamens, the longest petal (8-)9-14
(-16) mm; androecium glabrous, the blade of 3 staminodes elliptic-obovate or oblong-oblanceolate
1.5-2 X 0.7-1.2 mm, the filaments of 4 median stamens 1.8-
2.7 mm, of the centric abaxial one (2.5)3.5-6 mm, of the long abaxial pah (5.5-)
6.5-9 mm, the anthers of 4 median stamens including obliquely truncate beak
3.6-4.8 X 0.8-1.2 mm, of the long abaxial pair lunately lanceolate from obtuse
base including beak 5.2-6.5 x (1-)1.1-1.4 mm, the beak itself 0.5-0.8 mm long,
at orifice 0.7-1 mm diam, 2-umbonate adaxiahy and produced abaxiaUy into a
short poUen-cup divided by a slender vertical septum, the centric abaxial anther
scarcely narrower than its neighbors, fertUe; ovary thinly strigulose or pUosulous
lateraUy, the sutures glabrous, or glabrous overaU; style gently incurved and often
a trifle dilated distaUy (2-)2.2-3 x 0.2-0.3(-0.4) mm, the stigma obliquely introrse;
ovules 34-50.