CERTAIN ASCLEPIADS. 231 



The following new members of the genus are from regions 

 distant and western : 



AsCLEPiAS I.ONCHOPHYL1.A. Stems 1 or 2 from the root, 

 stout, suberect, low, only 7 to 9 inches high, densely leafy 

 from near the base to the summit, there producing 1 or 2 

 ample subsessile umbels ; leaves rather broadly lanceolate, 2 

 inches long or somewhat more, abruptly mucronate-acute, on 

 stout short petioles of less than % inch, firm, equally lightish 

 green and sparingly'- pubescent on both faces : flowers about 

 Vi inch long, dull purplish green ; hoods subquadrate-oval, 

 obtuse, the horn stout, incurved, not very acute. 



Plant of the San Francisco Mountain floral district in 

 northern Arizona, where it is doubtless a rarity, having been 

 collected by only one among the many botanists who have 

 visited the region, namely, by C. A. Purpus, in 1902. In his 

 distribution of specimens it was called A. Hallii, It is indeed 

 related to that quite rare species of Colorado and Utah, though 

 it is as nearly allied to A. pratensis of Mexico, with which it 

 agrees as to its reduced dimensions. It is upright, however, 

 while the Mexican ally is decumbent ; this also has few and 

 opposite leaves, while A. lonchophylla has them fairly crowded 

 on the stem, also mostly alternate. It is also notably pubes- 

 cent, whereas A. prateyisis is glabrous, or with but a few traces 

 of pubescence. 



DEMISSA 



Allied to A. erosa, but low, only 8 

 or 10 inches high, firmly erect, densely leafy with small foliage, 

 the herbage glaucous and slightly hoary : leaves ovate-Ianceo- 

 late, little exceeding an inch in length and a half-inch in 

 width, truncate at base, or nearly so, and sessile, strongly 

 ascending in pairs, the apex subfalcate-cuspidate : flowers in 

 several subterminal short-peduncled umbels, the individual 

 flower large for the plant ; hoods short, far from equalling 

 the anthers, subtruncate, the inner process broadly crescent 

 shaped, far exserted, short-pointed. 



An interesting plant, purporting to have been collected 



