Vermischte neue Diagnosen 185 
16. Scolosanthus Bahamensis N. L. Britton, 1. c., p. 452. 
An intricately branched, somewhat resinous shrub, 8 dm high or 
less, with gray-brown bark, the young twigs greenish, densely papillose, 
4-angled, armed with slender, scattered, pungent, solitary spines 1 cm 
long or less. Leaves opposite or fascicled, 2—5 mm long, thick, papillose, 
ovate to elliptic, revolute-margined, obtuse, very short-petioled, dark green 
above, paler beneath; flowers not seen; fruits solitary, oblong to globose, 
white, soft, 2—4 mm long. : 
Bahama Islands: Occasional in the coppices on New Providence 
(Britton & Brace, from coppice along Village Road, 367, type; coppice, 
Coker, 138); Fresh Creek, Andros (Northrop, 646). 
In Mem. Torrey Club, XII: 67, Mrs. Northrop has given a description 
of this interesting species, not named there, however, 
17. Thymopsis Brittonii Greenmann, l. c., p. 453. 
A low herbaceous perennial: stems several from a common base, 
ereet or ascending, slender, 4—10 cm in length, puberulent. Leaves 
opposite, rhombic-ovate to somewhat spatulate® 4—8 mm long, onehalf 
as broad, obtuse, entire, revelute-margined, narrowed below to a short 
petiole, sparingly puberulent to glabrous, dark green above, paler and 
glandular-punctate beneath; heads terminating the stem and branches, 
sessile, about 3 mm high, heterogamous, 5-flowered; involucre of 5 (4) 
oblong obtuse navicular or somewhat obtusely carinate-concave ciliolate 
green bracts; corollas all tubular and externally somewhat glandular, 
those of the 3 outer or pistillate flowers about 1 mm long, of uniform 
diameter, shorter than the style, minutely 4-dentate, those of the 2 (3) 
inner or perfect flowers 1,5 mm long with the tube expanded above and 
distinctly 4-toothed; pappus a minutely fringed crown much shorter than 
the corolla; mature achenes about 1,5 mm long, striate, glabrous. 
Bahama Islands: Moist palmetto lands, Tea House, New Provi- 
dence (Britton & Brace, 595; hb. Gr. and hb. N. Y. Bot, Gard.). 
The only other species of this genus known at the present time is 
T. Wrightii Benth., from which the one here described differs in being 
slightly puberulent instead of hirsute-hispid throughout, in having about 
5 flowers instead of 10 in the head, and in having somewhat shorter 
achenes. The plant was received for examination through the kindness 
of Prof. N. L. Britton. 
LV. Vermisehte neue Diagnosen. 
172. Eragrostis costata F. Turner in Proc, Linn, Soc. N. South Wales, 
XXX (1905), p. 91. ; 
An annul, tufted grass from six to fifteen, rarely eighteen, inches 
high including the inflorescence, glabrous except for a ring of spreading 
white hairs, varying in intensity, at the orifice of the sheaths. Leaves 
from three to four inches long, three lines wide, tapering into fine points, 
and prominently ribbed on the underside. The sheathes also are ribbed. 
