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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 247<br />

in outhne obhquely reniform obtuse, minutely mucronulate, 2.5-5.5 x 5.3-6.6<br />

cm, at base broadly flabellate or truncate, from base 5-nerved by the straight<br />

midrib and on its broad side 3, on its narrow side 1 short, incurved-ascending<br />

primary nerves, the midrib thence penniveined with 5-8 pairs of major obliquely<br />

ascending cam<strong>pt</strong>odrome secondary veins weU within the sharp cartilaginous mar­<br />

gin, these all again branched into a prominent quaternary reticulum of venules<br />

prominulous on both faces.<br />

Peduncles from upper If-axUs 1-3.5 cm, at apex 2-fld; bracts broadly subulate<br />

±2 mm; pedicels at anthesis 1-I-, in fruit to 2.5(-?) cm; sepals firmly herbaceous<br />

glabrous oblong-obovate obtuse to 8-9.5 mm, from base coarsely 4-6-nerved, the<br />

nerves branched distally; petals (presumably yellow) when dry pinkish-brown,<br />

subappressed-puberulent dorsally, all broadly obovate and contracted into a narrow<br />

claw ±2 mm, the vexillum deeply emarginate at apex, 20 x 11 mm, the rest<br />

obtuse, slightly longer, the 2 lateral plane, the 2 abaxial concave, enveloping the<br />

3 long stamens; androecium 10-merous of 3 adaxial staminodes 5 mm, 4 inter­<br />

mediate fertUe stamens each consisting of short stout filament and forwardly<br />

directed thecae 6.5-8 x 2 mm, and 3 abaxial fertUe ones with filament ±6 mm<br />

and incurved thecae 10.5-12 x 2 mm, the 7 fertile aU contracted at apex into a<br />

biporose beak ±0.4 mm; ovary strigulose; style strigulose, ±8 mm, slightly dilated<br />

and incurved at apex.<br />

Pod when half formed narrowly linear ±13 cm, the sutures already becoming<br />

prominent, probably subquadrangular when mature.—Collection: 1.<br />

Senna apsidoneura has the petiolar gland, the few-flowered axillary racemes,<br />

the perianth and androecium, and the elongately linear pod of ser. Trigonelloideae,<br />

but stands alone in the series because of its bifoholate, thick-textured,<br />

paUidly glaucescent leaves.<br />

66. Senna mucronifera (Bentham) Irwin & Barneby, comb. nov. Cassia mucronifera<br />

Martius ex Bentham in Martius, Fl. Bras. 15(2): 116. 1807.—<br />

". . . ad ripas fluminis S. Francisco prope Malhada [at mouth of R.<br />

Carinhanha, on Minas Gerais boundary] prov. Bahiens: Martius; inter<br />

Lavrinha et Rio Maranhao prov. Goyaz: Pohl; in prov. Minas Geraes:<br />

RegneU III. n. 477.; . . . Sorocaba prov. S. Paulo: Lund."—Lectoholotypus,<br />

Martius s.n., collected at Malhada in late XI. 1818 (fl.fr jun),<br />

M! = F Neg. 6247; paratypi, Pohl 1702, K! RegneU III 1477, K! = IPA<br />

Neg. 960, 961, S! Lund in hb. Warming. 190, C!—Emelista mucroni­<br />

fera (Bentham) Pittier, J. Wash. Acad. Sci. 19: 176, comb, subnud.<br />

1929.<br />

Coarse suffrutescent weakly malodorous herb with few erect or assurgent virgate,<br />

simple or distaUy few-branched, bluntly angulate stems at anthesis 9-24 dm,<br />

densely pUosulous throughout or almost so with rather stiff erect, ascending or<br />

loosely incurved, sometimes distaUy (in inflorescence) subappressed, often sordid<br />

hairs up to 0.2-0.45 mm, the fohage bicolored, the firmly membranous lfts dull<br />

dark green above, paler beneath, nearly always pubescent on both faces, the lvs<br />

abrupriy or graduaUy diminished distally, the inflorescence an exserted thyrse or<br />

thyrsoid panicle of subsessUe 1-2-fld racemes terminaring the main axis and its<br />

distal branches.<br />

Stipules erect herbaceous, falcately hnear-lanceolate (5-)6.5-l5 x 0.8-2 mm,<br />

strongly carinate-nerved, deciduous before the If.<br />

Lvs (disregarding depauperate distal ones) 5-13 cm; petiole including htrie<br />

swoUen pulvinus (0.8-)l-3.5 cm, at middle 0.8-2 mm diam, ribbed dorsaUy and

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