MARCH, igoo. PLANTS UTOWAN^E MILLSPAUGH. 109 



COSMOS CAUDATUS H. B. K. nov. gen. et Sp. 4:240. 



Roadside in damp soil, center of island of Grand Cayman (1353.) 



TRIDAX PROCUMBENS Linn. Sp. PL 900. 



Dry hillside .at Morro Castle, Santiago de Cuba (1066). 



FLAVERIA LINEARIS Lag. Gen. et. sp. nov. 33. 



A very robust and foliose form collected in an open field south 

 of Progreso, Yucatan (1652), and on the beach of Perez Island, Alac- 

 ran Shoals (1753). 



BROTEROA TRINERVATA (Willd.) Pers. Ench. Bot. 2:498. 



Naumbergia trinervata Willd. Brotera Contrayerba Spr. Flaveria 

 repanda Lag. Ditches near Progreso (1653) and along the railroad 

 south of the lagoon crossing, Progreso (1699, 1731), Yucatan. 



Porophyllum Millspaughii Robinson* sp. nov. 



Shrub or undershrub; stems and primary branches terete, cov- 

 ered with a purplish-gray smoothish cortex, widely and dichoto- 

 mously forked (through the habitual tendency to abortion in the 

 terminal bud); leaves elliptical, rounded at both ends, coarsely cre- 

 nate through the intrusion on each edge of 2 or 3 shallow bays, 

 membranaceous, thin, not paler beneath, 2.2 to 3.3 cm. long, 1.4 to 

 1.8 cm. broad; glands intra-marginal, the lateral lunate, subtending 

 the bays, the terminal one linear, coincident with the apex of the 

 midnerve, other glands upon the surface of the leaf wholly wanting; 

 petioles slender, 5 mm. long; peduncles 1.3 to 1.8 cm. long, slender, 

 scarcely thickened upward; involucral bracts oblong-linear, 1.2 cm. 

 long, scarious-margined, usually browned at the tip; glands dark, 

 linear; usually biseriate, heads usually nodding in anthesis; flowers 

 about 18, greenish-white; corolla 9 mm. long, puberulent upon the 

 outer surface; achenes purplish black, somewhat attenuate and 

 (under a lens) upwardly hispid, 8 mm. long. Progreso, Yucatan, 5 

 Mar., 1899 (1648). Types in Herb. Field Col. Mus. No. 61648, and 

 Herb. Gray. 



This species is obviously related to P. Ervendbergii, Gray, and 

 P. nummularium, D. C. It is distinguished, however, by the absence 

 of the irregularly distributed superficial glands which are present on 

 the leaves of both, the species mentioned. It also has somewhat 

 shorter peduncles, and larger leaves. 



PECTIS CUBENSIS (Rich.) Griseb. Cat. PI. Cub. 156, fide M. A. Fernald. 

 Laurentia Rich. Fine full masses of this species were found in 

 the sand of the roadside at Spot Bay, Grand Cayman (1279), but 

 not seen elsewhere on the island. It is called "Flat-weed," and is 

 used in infusion as a stomachic tonic. 



ERECHTHITES HIERACIFOLIA (L.) Raf. de C. Prod. 6:294. 



Senecio hieracifolius Linn. In an old field near Pedernales Point, 

 Isle of Pines (1418). 



*Prof. B. L. Robinson, Gray Herbarium, Cambridge. Mass. 



