EUPHORBIACEAE. 241 



ui>per axils, campaiuilate, le^s than 1 mm. loncj, short-pedunculate, glabrous 

 without, ciliate at the throat within; lobes triangular; glands 4, slightly 

 stalked, orbicular to ovate, the fifth represented by a sinus with a rounded 

 fundus and flanked by two larger, nearly quadrilateral lobes; appendages 

 nearly as broad as the glands, entire or 2-3-crenate; capsule bluntly tricoccous, 

 glabrous; seeds ovoid-quadrangular, pinkish or brownish, 1 X -8 mm., angles 

 prominent, facets slightly transversely ridged. 



On rocks, in sjind and in pot-holes, from the southern coast of (Ireat I'.ahnma to 

 Ambergris (\-iy : — Florida : Bermuda : Cul)a ; Jamaica ; Cavmans. IJcfei-red hy Mrs. 

 Northrop and l)y Dolley to Euithni}>'ui scrpcus Kth., and by Dolicy again to Eu- 

 phorbia maculatd L. Blodgett's SrrRCK. 



13. Chamaesyce prostrata (Aiton) Small, Fl. SE. U. S. 713. 1903. 



Euphorbia prostrata Aiton, Hort. Kew. 2: 139. 17S9. 



Annual, prostrate, more or less pubescent, or glabrate ; stems branched 

 at the base; branches slender, .5-15 dm. long, forking. Leaves thin, oblong or 

 ovate, strongly oblique at the base, 4-7 mm. long, obtuse, more or less serrulate 

 toward the apex, minutely pubescent on both sides, petiolate; stipules thin, 

 papyraceous, broadly deltoid, ciliate at the acute apex; involucres glabrous, 

 axillary, minute; lobes elongate-triangular, ciliate on the margin; glands 4, 

 transversely oval, the fifth replaced by a small extra glabrous tooth on the 

 involucral margin; appendages about the width of the glands, finely many- 

 crenate ; capsule strongly tricoccous, glabrous except on the keels- of the cocci 

 which bear a fringe of long hairs; seeds pink, elongated-ovoid-quadrangular, 

 pointed, 1 X -^ mm., strongly and sharply sculptured by numerous, strictly 

 transverse, ridges which include the angles. 



Grassy places on New Providence and Grand Turk Island : — Bermuda ; North 

 Carolina to Missouri and southward to Brasil and I*eru ; West Indies. Prostr-vte 

 Spurge. 



14. Chamaesyce hirta (L.) Millsp. Field Mus. Bot. 2: 303. 1909. 



Euphorhia hirta L. Sp. PI. 454 (ante). 1753. 

 Euphorbia piliilifera L. loc. cit. (post). 1753. 



Annual, prostrate or ascending, pubescent with amber-colored, multi- 

 cellular hairs ; stems branching from the base, 1-4 dm. long, forking or simple. 

 Leaves ovate to oblong-lanceolate, more or less falcate, 1-3 cm. long; some- 

 times blotched with deep-red, strongly oblique at the base, acute, sharply 

 serrate above the middle, petiolate; stipules long cylindro-aristate, hairy; 

 involucres densely capitulate in peduncled clusters, turbinate; lobes large, 

 triangular, densely long-ciliate ; glands 4, stipitate, the fifth replaced by a 

 shallow, rounded sulcus in the involucral margin; appendages none; capsule 

 strongly 3-coccous, with short crispeil multicellular hairs; speeds salmon-j-iink. 

 elongated-ovoid-quadrangular, .8 X -5 mm., the angles sharp, facets strongly 

 marked with numerous, mostly incomplete, transverse ridges. 



Rocks, path-sides and cultivated grounds. Andros and New Providence to 

 Inagua : — Bermuda; Florida; Mexico: West Indies; Central America; American 

 and Old World tropics. Hairy Spurge, 



15. Chamaesyce Berteriana (Balbis) Millsp. Field Mus. Bot. 2; 30:?. 1909. 



Euphorbia Berteriana Balbis; Spreng. Syst. 3: 794. 1826. 



A low, prostrate or ascending, densely pubescent annual, with a clustered 

 terminal inflorescence. Leaves oblong-ovate, obtuse, 1-L5 x •4-.6 mm., 

 strongly inequilateral and oblique at the base^ obtusely or crenately denticu- 

 late; stipules cylindro-aristate with a broadeneil base, glabrous; inflorescence 

 corymbose at the apices of the smaller branchlets; involucres minute, oblong- 

 turbinate, glabrous below, long-ciliate-hairy at the throat without and within; 



