13.07.2013 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

1982] CASSIINAE—SENNA 279<br />

margined, nearly isomorphic exce<strong>pt</strong> the innermost a trifle longer, aU oblong or<br />

oblong-eUi<strong>pt</strong>ic obtuse 5-6.5 mm; corolla zygomorphic, the petals bright yeUow<br />

drying stramineous or whitish brown-veined, thinly pilosulous at claw and along<br />

some veins dorsaUy, all broadly obovate or the 2 abaxial ones narrower and a<br />

trifle shorter, the longer ones 11-14 x 5.5-8 mm; androecium glabrous, funcrion­<br />

aUy 7-10-merous, 1-3 adaxial often reduced to Unear-spatulate staminodes but<br />

sometimes all 10 fertUe, the 4 median and 3 abaxial stamens isomorphic exce<strong>pt</strong><br />

slightly accrescent toward abaxial side of fl, the filaments 2-3 mm, the anthers<br />

Unear-oblong 3-4 x 0.8-1 mm, slightly incurved thin-textured bicolored, when<br />

dry castaneous with broad lateral yeUow stripe along the sutures, at apex conical<br />

and 1-porose; ovary densely white-pilose; style (1.5-)2-3 x 0.2 mm, incurved<br />

from ovary but thence almost straight, not at aU dilated distally; ovules 26-34,<br />

Pod stiffly erect subsessUe oblong-elhpsoid straight (20-)22-32 x 6-7 mm, a<br />

httle lateraUy compressed but strongly turgid, abru<strong>pt</strong>ly contracted distaUy into<br />

the subulate persistent style-base, the stiffly papery valves early becoming ochraceous<br />

or dark brown with pale differentiated border parallel to the sutures, dense­<br />

ly pUosulous with mixed short fine hairs and coarse setae up to 1.2-2.2 mm, when<br />

fully ripe low-corrugate over the seeds, dehiscent downward ± halfway through<br />

both sutures, narrowly gaping to emit the seeds but not twisted; seeds closely<br />

crowded in 2 interdigitating ranks, each turned edgewise to the valves, in broad<br />

profile paddle-shaped (but often distorted by crowding) ±3.8-4.3 x 2.6-3.2 mm,<br />

bluntly keeled around periphery, sinuously ridged on broad faces, the testa pale<br />

drab- or grayish-ohvaceous dull, coUiculate and crackled overall, the deeply engraved<br />

areole elli<strong>pt</strong>ic or subcircular 0.<strong>35</strong>-0.5 x 0.3-0.4 mm.—Collections: 16.<br />

Desert flats, washes and stony hills below 400 m, widespread and locally plen­<br />

tiful along the Gulf slope and shore of Baja California and off-shore islands from<br />

Isla Angel de la Guarda and Bahia de los Angeles s. to Cabo San Lucas, in lat.<br />

23°-29°30'N.—Fl. primarUy I-IV, sporadically throughout the year, prolificaUy<br />

following chubascos, the pods long persisting.—Oyason, used at La Paz for poul­<br />

tices.<br />

Closely akin to the preceding, which see for differential commentary. Below<br />

the Mexican boundary the ranges of S. covesu and S. confinis are almost fully<br />

separated by the Guh of California and they are everywhere morphologically<br />

clearcut. On and near Tiburon Island, however, they are either actually sympatric<br />

or close neighbors and we have seen one specimen from the southeast side of<br />

Isla San Esteban in lat. 28°4rN (Moran 28168, SD) ambiguous between them in<br />

characters of the seed. Whether this represents recent hybridization or the un­<br />

differentiated stock from which sibhng species arose is not determinable.<br />

82. Senna pilosior (Macbride) Irwin & Barneby, Phytologia 44(7): 500. 1979. Cassia<br />

bauhinioides var. pilosior Robinson ex Macbride, Contrib. Gray<br />

Herb., n. ser. 59: 27. 1919—"TEXAS: Bofecillos Mts. [s. Presidio<br />

County], Se<strong>pt</strong>., 1883, Havard, no. 14 . . . MEXICO: Torreon, Coa­<br />

huila, Oct. 13-20, 1898, Palmer, no. 455; 75 miles southwest of Parras,<br />

Coahuila, May, 1880, Palmer, no. 2132."—Holotypus, Havard 14,<br />

GH! paratypi. Palmer 455, GH, <strong>NY</strong>, US! 2132, GH, USl--Cassia<br />

pilosior (Macbride) Irwin & Barneby, Sida 6(1): 10. 1965.<br />

Cassia durangensis sensu Turner, 1959, p. 74, map <strong>35</strong> (Texas); Correll & Johnston, 1970, p.<br />

Isely, 1975, p. 81, 198, 201, map 28 (Texas).<br />

Cassia pilosior sensu Isely, 1975, p. 227.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!