ROBINSON AND GREENMAN. — GENUS PERYMENIUM. 523 



characters. — Prodr. v. 608; Hemsl. Biol. Cent.- Am. Bot. ii. 180. — Char- 

 acterized from a plant cultivated in Mexico. Not seen by the writers. 



t- H- Involucral scales narrower, ovate-lanceolate, acute or at least much narrowed 



to an obtuse tip. 



3. P. BUPHTHALMOiDES, DC. Suffruticose : branches appressed- 

 puberulent : leaves opposite, subsessile, elliptic-lanceolate, acuminate, 

 3-5-nerved at the base, coarsely serrate, sparingly puberulent above, 

 puberulent especially upon the veins beneath ; peduncles terminal, elon- 

 gated, subsolitary : involucre campanulate ; scales oblong-lanceolate, sub- 

 acute, appressed-puberulent : rays 7 to 10, oblong, 1.5 cm. long, 4 to 5 

 mm. broad. — Prodr. v. 609 (whence descr. is compiled) ; Hemsl. 1. c. 

 181. — Mexico, Alamaii, ace. to DC. Having seen no authentic speci- 

 men of this species we have been obliged to interpret it from the descrip- 

 tion and from a careful drawing in the Klatt herbarium. To this species 

 we refer Pringle's no. 7636, collected on the Serrania de Ajusco, in the 

 Federal District, Mexico, altitude 3,000 m. Most of its leaves are acute 

 but a few are acuminate and the pubescence of the involucral scales is 

 not appressed. 



4. P. Rosei. Stems from a lignescent base, erect or nearly so, 

 3 dm. high, covered with a coarse spreading pubescence : leaves ovate to 

 oblong-lanceolate, coarsely and sharply serrate-dentate, acute, green and 

 pubescent on both surfaces, 3-5-nerved from the rounded essentially 

 sessile base, 3 to 4 cm. long, 1 to 1.5 cm. broad : peduncles mostly 2 or 

 3 at the ends of the branches, 5 to 8 cm. long, 1-headed ; involucral 

 scales about 10, oblong-lanceolate, acute, 8 mm. long: rays about 7, 

 bright orange, elliptical, 1.3 cm. long, 9 mm. broad. — Road between 

 Mesquites and Monte Escobedo, Jalisco, Dr. J. A^. Eose, 26 August, 1897, 

 no. 2608. Types in herb. U. S. Nat. Museum and herb. Gray. 



* * Involucral scales minutely strigose with closely appressed hairs not ciliate. 



5. P. Cervantesii, DC. Stems numerous, decumbent, subsimple, 

 appressed-puberulent : lowest leaves ovate, the others narrowly elliptic, 

 strongly 3-nerved, regularly but rather finely and remotely serrate, 

 scabrous-puberulent, acute, green on both sides : peduncles long, mostly 

 solitary at the ends of the stems ; involucral scales ovate-lanceolate, 

 narrowed to au obtusish or acute tip : rays about 11, oblong, 1.5 cm. in 

 length, 4 mm. in breadth. — Prodr. v. 609 ; Hemsl. Biol. Cent. -Am. Bot. 

 u. 181. — Valley of Mexico, Santa F^, Bourgeau, no. 378, Flor de 

 Maria, Pringle^ no. 3169. 



