180 



Ceiba casearia Medic. Malvenfain.lt). 1787. 



A few large trees, 20 meters high witli a trunk 15 dm. in diameter, were seen near 

 Concepcion, Topic, July 29, 1897; J. N. Rose (No. 1887). The trees are said to Hower 

 in the dry season. 



This is one of the tree-cottons of which the Mexicans use the fiber in pillows, etc. 

 Ceiba grandiflora Kose, Contr. Nat. Herb. 1 :308. 1895. 



This Ceiba is a common tree throughout tropical western Mexico. It docs not 

 flower during the rainy season, or only sporadically, and my specimens therefore 

 chiefly show foliage. The leaves being taken at various times throughout the rainy 

 season show great variation in texture, pubescence, etc. My specimens may all 

 belong to one species, although I have referred them to two. Full material of all the 

 Mexican species should be collected so as to enable someone to redescribe them. 



Collected by J.N. Kose near Rosario, July 6 to 10, 1897 (No. 3161); near Colomas, 

 Sinaloa, duly 16 (No. 1705), and between San Juan Capistrano, Zaeatecas, and 

 Hnejuquilla, Jalisco, August 23 (No. 2194). 



Ceiba tomentosa (Robinson) Britten & Baker, Journ. Bot. 34 : 175. 1896. Erioden- 

 dron torn cut osum Robinson, Proc. Am. Acad. 29 : 314. 1894. 



Collected by J. N. Kose at Bolanos, September 10 to 19, 1897 (Nos. 2934 and 3687), 

 and between Bolafios and Guadalajara, Jalisco, September 22 (No. 3096). 



I have referred these specimens here as they come from the region of the typo 

 specimens. In the field I did not distinguish this species from the preceding, but 

 the herbarium specimens show a difference in pubescence and texture which seems 

 to be constant. 



Gossypiurn barbadense L, Sp. PI. 2 : 697. 1753. 



A shrub or largo bush 5 to 8 feet high. It is cultivated in many places in Mexico 

 for the cotton. Specimens were obtained from the following places : 



La Paz, Lower California, June 14, 1897 (No. 1306) ; in yard at Iluasemote, August 



14 (No. 2285); on the road between San Juan Capistrano and Hnejuquilla, .Jalisco, 



August 23 (No. 2498), and in yard at Bolanos, Jalisco, September 10 to 19 (No. 3697). 



Horsfordia newberryi (Wats.) Cray, Proc. Am. Acad. 22: 296. 1887. Abutilon 



nmberryi Wats. Proc. Amer. Acad. 11: 125. 1876. 



This is a common shrub on the low hills about Guaymas. 



Collected by J. N. Hose, .June 5 to 11, 1897 (No. 1262). 

 Kosteletzkya paniculata Benth. PI. Hartw. 285. 1848. 



The type was collected at Bolanos, Jalisco, by Hartweg. I did not see the plant 

 at this place, but collected specimens between Bolanos and Guadalajara, September 

 22, 1897 (No. 3064). 



Malva parviflora L. Amoon. Acad. 3 : 416. 1756. 



Collected by J. N. Rose at Colomas, July 16, 1897 (No. 1723), and between Concep- 

 cion and Acaponeta, July 30 (No. 1905). 



This is called by the Mexicans "malva castilla." 

 Malvastrum greenmanianum Rose, sp. nov. 



Stems 5 to 8 feet high, sparingly branched; plant more or less stellate-pubescent 

 throughout; leaves ovato to orbicular in outline, cordate at base, 3-lobed, with the 

 lobes acute, somewhat unequally crenate, the larger ones 5 to 6 inches long (on 

 petioles 4 to 6 inches long), becoming much smaller above; flowers in dense axil- 

 lary clusters or short spikes, or sometimes in a terminal interrupted spike, either 

 naked or leafy; bractlets 3, filiform; calyx 3 lines broad, becoming larger in fruit; 

 lobes ovate, acute, 1 lino long; petals white, small (1£ lines long), nearly orbicular,' 

 rounded at apex, somewhat cuneate at base; carpels usually 9; 1 line in diameter, 

 smooth except a small tuft of hairs near the tip. Collected by Mr. C. G. Pringle in 

 the pedregal of the Valley of. Mexico, October 19, 1896 (No. 6582). 



This species is very near .1/. schaffneri Wats., but differs somewhat in the shape 



