March, 1900. Plants Utowan^e Millspaugh. 59 



Manihot Manihot (Linn.) Cockl. Bull. Torr. Club. 19:95. 



In an old fallow field near Hamilton, Bermuda (136), and in a 

 cultivated field near Spot Bay, Grand Cayman (1293). 



Jatropha curcas Linn. Sp. PI. 1006. 



Old field at Catano, Porto Rico (187). 



Jatropha gossypifolia Linn. loc. cit. 



Old fields at Caguas (225) and Guanica (724), Porto Rico; near 

 Charlotte Amalia, St. Thomas (442), and in the environs of San 

 Domingo city (873). 



Jatropha urens stimulosa (Michx.) Muell. de C. Prod. 15:1101. 



Jatropha stimulosa Michx. Frequent in the arid stony scrub- 

 lands south of Progreso, Yucatan (1662). 



Jatropha Portoricensis sp. nov. Plate lxii. 



Curcas Loureira. Leaves strongly peltate, trifid, circular 

 at the base, the lobes fusiform pointed, sinus rounded, margins entire; 

 glaucous beneath, polished above; stipules subulate, early decidu- 

 ous ; petioles nearly or quite as long as the limb ; cymes tri-dichoto- 

 mous, bracts small deltoid, acuminate ; male calyx segments ovate 

 acute, petals somewhat spatulate obtuse nearly free below, female 

 calyx caryophyllous tube thrice the length of the male ; stamens 10, 

 the 5 inferior free and shorter than the connate interior 5 whose fila- 

 ments are united for the lower two-thirds, anthers all alike ; ovary 

 smooth apparently three ridged, styles united only at the base, stig- 

 mas binate claveate. Fruit 



A tall shrubby form, strict and glabrous, branches wine-colored 

 below, lurid toward the young tips; leaves 10-13 cm - broad, 10-1 1 cm. 

 long, petioles 8-9 cm. long; main peduncle 3 cm. long, branching 

 2-4 cm., cyme about 12 cm. broad. The species differs from J. her- 

 nandiaefolia Vent, in its leaves being all trifid with entire margins, its 

 short peduncle, acute calyx segments and general habit. 



Dry hillside on the shore of the bay of Guanica, Porto Rico (700). 



Omphalandria linearibracteata sp. nov. 



Bracts narrowly linear apiculate, not revolute margined, thrice as 

 long as their petioles, biglandular at the attenuate base, cymes tri- 

 dichotomous densiflorous, stamineal column triantherous at the 

 dilated apex, ovary glabrous, with a cluster of three ovoid nectaries 

 at the base, inflorescence scattered-pilose. Stipules large, foliacious 

 biglandular as in the leaves. 



A thick-stemmed fleshy shrub about 2 meters high, branching at 

 the top. Stipules a counterpart of the leaves 5x7 cm.; leaves 

 broadly ovate, some sagittate, obtuse, deeply cordate pinnately (7-8 

 jugae) veined, 22 cm. long by 16-18 cm. broad, densely papillate 

 above, finely and densely short-pilose beneath; venation densely 

 reticulated beneath, all the veins flat as if compressed : glands 2, 

 large, mammiliform 6 mm. in diameter, close to the base of the leaf, 

 petiole 10 cm. long, broadened at the base. Inflorescence thyrsoidal 

 34-36 cm. long, basal branches 7-12 cm. long, main peduncle 8 mm. 

 thick; bracts linear 3-6 cm. long, petioles filiform 1-2 cm. long. 



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