NEW PLANTS FROM MEXICO— ROSE. 439 



hairs; stipules broad, the free portion obtuse; pedicels bearing- sessile 

 glands; h3'panthiuni whitish or rose-colored, the sepals 3 to -t mm. 

 long; sepals broadly oblong, green at the rounded obtuse tip; petals 

 white, narrowly linear-oblanccolate, about twice as long as the sepals; 

 stamens and stjdes long-exserted. 



Collected by C. G. Pringle at Trinidad, on the border of the States 

 of Puebla and Hidalgo, 1904 (no. SS06). 



DAHLIA CHISHOLMI Rose, sp. nov. 



Stems 1 to 2 meters high, simple at Ixise, but with long slender 

 branches above; leafy part of stem 5 to 7 cm. long, bearing 4 or 5 

 pairs of closely set leaves, very hispid, upper part smooth, almost 

 naked, glaucous and purplish; leaves ver}" variable either simple or 

 with 3 to 5 leaflets, ver}^ hispid on both sides, like the lower part of the 

 stem, strongly serrate, acute, the terminal leaflet cuneate at base; 

 peduncle 20 to 40 cm. long, slender; flowers few; outer bracts of 

 involucre 5, reflexed, green, ovate; inner ])racts 8, erect; vays 8, a 

 deep brick red, oblong, 25 nun. long, spreading at right angles with 

 the disk. 



Collected by Frederick Chisholm on Hacienda de Trinidad, near 

 Arcelia, Guerrero, in 1904, and flowered in the greenhouse of the 

 Department of Agriculture in November, 1904 (no. 10573); also sent 

 from Guadalajara (station not mentioned) in 1904, and flowered in 

 May, 1905 (no. 9884, type). 



