MARCH, 1900. PLANTVE UTOWAN^E MILLSPAUGH. 37 



erect, unbranched growth 20-25 cm. high, very downy, pubescent, and 

 simple terminal spikes only 7.5-12.5 cm. long. 



Prevalent in old fields on the hillsides south of Charlotte Amalia, 

 St. Thomas (484). Type in Herb. Field Col. Mus. cat. No. 60484. 



ALTERNANTHERA Forsk. 



In determining the limits of this genus I prefer to accept the 

 interpretation of Grisebach, Bentham, Otto Kuntze and others who 

 made it to include Mogiphanes Mart, and Telanthera R. Br. excl. Litho- 

 phila Sw., that is, all species of the Capitato-spicate Gomphronea with 

 undivided stigma, and stamens which alternate with sterile filaments 

 upon a more or less cup-shaped tube. 



ALTERNANTHERA BRAZILIANA (Linn.) Kuntze Rev. Gen. 537. 



Gomphrena Braziliana Linn. Am. Acad. 4: 310. 



Mogiphanes Braziliensis Mart. Nov. Gen. et Sp. 2: 34. 



Philoxerus Braziliana Sm. Rees. Cycl. 27: 4. 



Mogiphanes straminea Mart. Nov. Gen. et Sp. 2: 35. 



Celosia altissima Salzm. ex. Moq. de C. Prod. 13: 381. 



Telanthera Floridana Chapm. Fl. So. U. S. 383. 



Alternanthera straminea Millsp. Field Col. Mus. Bot. i: 16. 



Climbing to a height of 6-12 feet supported by dense shrubbery, 

 on all parts of Cozumel Island (1710). 



The wide range of this species includes southern Florida, the 

 West Indies, coastal Mexico, Central and South America. Care should 

 be observed to distinguish it from A. Costaricensis Kuntze, which is 

 described as being more or less fascicul'ately pilose, the anthers glo- 

 bose instead of oblong, and having staminodia laterally instead of 

 apically pectinate. 



Alternanthera Culebrasensis Uline, Field Col. Mus. Bot. i: 420. 



Prostrata caulibus gracilibus, radicantibus, praecipue superne 

 pube densa appressa vestitis; foliis rotundatis breviter pedicellatis, 

 supra (nisi junioribus) glaberrimis, subtus densius pilosis, pilis caulium 

 foliorumque verticillatim ramulosis, capitulis ovatis, densifloris sessi- 

 libus, solitariis vel binis; sepalis dorso pilosis, pilis setigeris, exteriori- 

 bus trinerviis, interioribus plicato-carinatis, omnibus brevissime ari- 

 statis quam bracteis 2-plo longioribus; staminodiis filamenta fertilia 

 aequantibus, usque 5-laciniatis, filamentis in ^ altitudine coalescen- 

 tibus. 



Caules vix i mm. diametro, internodiis 3-6 cm. longis. Folia 

 1.5-2.5 cm. longa lataque, basi saepe inaequilatera, membranacea, in 

 sicco laete virida, in axillis cristas lanosas gerentia. Capitula 4-6 mm. 

 longa. Flores 3 mm. longi, 2 mm. lati. Antherarum thecce lineari- 

 lanceolatae. 



Culebras Island, south shores, (607). Type in Field Col. Mus. 

 Herb. Cat. no. 60607. 



Nearer A. (Telanthera} Sintenisii Urban /. c. than the preceding, 

 but the pubescence on the leaf of the latter is described as "supra 

 laxius subtus densius pilosis," upon which rests the chief difference in 

 the above species. It may prove to be only a variety a question 

 which only a comparison of the two plants can decide. 



