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

190 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. 35
EspinhaQO and locally to hs e. slope on upper Rio Jequerinonha and Rio Pardo,
there entering s.-e. Bahia; s. from Minas, becoming less frequent, through e.
centr. Sao Paulo to the sources of Rios Ivai and Paranapanema in n. and n.-e.
Parana.—Fl. X-VI(-VIII), most prolificaUy I-V; fr. mosriy (IV-)V-IX.
Among Bacillares as a whole and especiaUy among the large-flowered group
with two strongly dimorphic sets of anthers, S. rugosa is a pygmy, either func­
rionaUy herbaceous from a xylopodium or weakly suffruricose, and at maturity
seldom above 1.5 and often less than one meter taU. It is closely related to the
empharicaUy fruricose or arborescent S. macranthera, of which it has essentially
the flower; but may always be recognized with ease by the abbreviated tme
periole, which is shorter than the stalk between the two pairs of leaflets, by the
presence of a gland between the distal pair of pulvinules, and by the alveolately
rericulate dorsal surface of the leaflets. The short, plumply sausage-shaped, internally
pulpy pod, from which the seeds are tardily released by weathering, is
almost that of the much smaller-flowered group related to S. chrysocarpa. The
species is one of the two or three commonest true sennas of the Brazihan cerrado
and characteristic of it, extending only weakly northward into floristicaUy related
savanna and deciduous scrub-woodland communities.
44. Senna splendida (Vogel) Irwin & Barneby, comb. nov. Cassia splendida Vo­
gel, Syn. Gen. Cass. 17. 1837.—Typus sub var. splendida indicatur.
Weak, diffuse or ascending shrubs and slender, commonly sarmentose treelets
at anthesis (l-)2-6(-10) m, except for always strigulose ovary and often dorsally
puberulent petals and pedicels wholly glabrous, or the stems and If-stalks exceptionally
thinly incumbent-pUosulous, the young branchlets smooth subterete, the
fohage bicolored, lustrously olivaceous above, paler dull beneath, the thyrsiform-
paniculate inflorescence mostly leafy-bracteate, or by atrophy of some distal lvs
shortly exserted.
Stipules usually falcate linear-oblanceolate or oblanceolate (5-)7-
20 X (0.5-)0.7-5 mm, rarely dilated and obUquely obovate-cuneate to 10 mm
wide, caducous, present at base of young lvs but lacking from many mature
specimens.
Lvs (5-)6-13(-15.5) cm (some distal ones smaller); petiole including wrinkled
but Utrie dilated pulvinus (8-)10-35(-42) mm, at middle (0.4-)0.5-0.9(-l) mm
diam, bluntly low-carinate dorsaUy, shallowly grooved ventrally; rachis
(4-)6-18(-21) mm, shorter than petiole; seta filiform persistent or deciduous;
gland 1 inserted immediately above lower pair of pulvinules, clavi- or linguiform
stipitate, in profile 1.5^.5(-5) mm taU, the ovoid or narrowly lance-ellipsoid body
decurrent around sides of the ventraUy sulcate stipe and either longer or shorter
than h; pulvinules discolored wrinkled 1.3-3.2(-3.5) mm; distal pair of lfts ovate
to lance-eUipric, ellipric, or seldom linear-ellipric, obtuse or subemarginate, often
minutely mucronulate, of larger lvs (4-)5-10.5 x (1.2-)1.5-3.5(-3.8) cm, mostly
2-A rimes, when hnear-ellipric 4-6.5 rimes as long as wide, at base subsymmetrically
rounded on both sides or broadly cuneate on the distal one, the entire
margin either plane or revolute, narrowly sharply membranous-margined, the
slender straight midrib giving rise on each side to (9-)ll-19(-24) major campto­
drome and ± as many intercalary widely ascending secondary veins, these all
with the terriary venulation finely prominulous on both faces, the reticulation of
the lower face carried out to areoles