62 Field Columbian Museum Botany, Vol. 2. 



ters; involucres subsessile, turbinate, lobes triangular margined with 

 a fringe of long strict white hairs; glands 4, elliptical, pale green, 

 appendages bright red or lurid, the margin entire, the two flanking 

 the sulcus larger, fifth gland replaced by a deep triangular sulcus in 

 the involucre. Capsule smooth, deeply trisulcate; carpids strongly 

 angled; seeds pink-ashen .8 x .65 mm., strongly triangular with a 

 sharp dorsal ridge; facets all convex, anastomosingly and interrupt- 

 edly transverse ridged, two main ridges on the ventral and four on 

 the dorsal facets. 



Branches of the prostrate plants 10-18 cm., of the ascending 

 20-36 cm. long; leaves at the nodes 8-10 x 6-7 mm., internodes 1-2 

 cm., petioles 1.5-2 mm., involucres 1.5 mm. This species appears 

 to connect E. Berteriana Balb. with E. capitellata Eng., both of 

 which are hirtellate and have widely differing characters. The spe- 

 cies grows luxuriantly in the grass of the southwestern and northern 

 shores of the Island of Cozumel and in the sands of the northeastern 

 point (1604, 1605. 1606, 1608, 1609, 161 1, a fine series of varying 

 habit). Type in Herb. Field Col. Mus. No. 61606. 



Euphorbia Cozumelensis pilosulca var. nov. 



Differs from the species in its open lax growth, long internodes, 

 larger nodal leaves, white glandular appendages, larger brownish-red 

 seeds with concave facets, and the presence of long, straight hairs in 

 the sulci of the capsules. A very strongly characterized variety 12-35 

 cm. growth, internodes 2.5-4.5 cm., nodal leaves 11-15 x 7-10 mm., 

 petioles 2-3 mm., seeds .9 x .7 mm., the facets marked as in the spe- 

 cies. West shore of Cozumel in sand at the base of coco trees near 

 the village of San Miguel (1501, 1502). 



Euphorbia crassinodis Urban Symb. Antill. 1:340. 



Type collected in Cuba by Wright, No: 2014, placed under E. 

 serpens by Grisebach in his Cat. 20; the following characters drawn 

 from the type kindly communicated to me by Prof. Urban, should 

 be added to his description: 



Involucral lobes entire except the pair flanking the sulcus, which 

 are each one-papillate on the margin toward the sulcus; the pilosity 

 of the involucre is not constant; glands 4, sub-equal, those nearest 

 the sulcus larger, and larger appendaged; appendages small, erose- 

 margined; fifth gland represented by a long slender awn-like pro- 

 longation of the involucral tissue at the base of the sulcus. Cap- 

 sule* smooth, deeply triculcate, carpids sharply red-keeled; seeds 

 smooth, pinkish, .85X.65 mm., obtusely triangular, the dorsal angle 

 the sharpest, facets all convex. 



The affinity of this species is to E. serpens H. B. K. My speci 

 mens were collected in the cracks of the masonry of the range roof 

 Morro Castle, Santiago de Cuba (1061). 



Euphorbia pileoides sp. nov. Plate lxiv. 



Annual, prostrate, glabrous throughout; stems and branches at- 

 tenuate; stipules blepharose on the upper surface of the branchlets, tri- 

 angular or deltoid underneath, margin papyraceous entire erose or 



The following characters drawn from plants of my collection. 



