296 PROCEEDINGS OP THE AMERICAN ACADEMY. 



cbotomous cymes: leaves varying greatly in length and texture. — Bot 

 Calif, i. 69 ; Bibl. Index, 454. A. Fendleri, var. subcongesta, Wats 

 Bot. King Exp. 40, & PI. Wheeler, 6 ; Porter & Coulter, Fl. Col. 13 

 Rothr. Enum. PI. Col. 35. A. Fendleri, var. glabrescens, Wats. Bot 

 King Exp. 40, & Bibl. Index, 95, differs only in its still looser inflo 

 rescence, and should doubtless be referred hither. — Rocky Mts. of 

 Colorado and Arizona, Newberry, to British America, Cypress Hills, 

 Macoun, westward to Oregon, Howell, and California, Sierra Co., 

 Lemmon, Donner Pass, Torrey. These puzzling and inconstant 

 forms are intermediate between this species and A. capillaris, A. 

 Fendleri, and A. macradenia. From the last they scarcely differ 

 save in their smaller flowers and slightly in the form of the petals. 



A. macradenia, Wats, (revised). Glabrous or nearly so: 

 rootstock more or less ligneous, extensively and irregularly branched : 

 stems stout for the genus, 6-15 inches high, knotted with the eularged 

 nodes : leaves chiefly cauliue, glaucous, rigid, pungent, J— 2 inches long : 

 flowers larger than in the related species, in an open cyme : sepals 

 fleshy subcarinate, 2| — 2| lines long, with membranous margins : petals 

 considerably exserted, obovate or oblong with an obtusish sometimes 

 auricled base : stamiueal glands moderately developed : stigmas sub- 

 capitate. — Proc. Am. Acad. xvii. 367 in part. — S. California, Mo- 

 have River, Palmer, 41 ; Antelope Valley, Oliver ; S. Utah, Parry, 

 20, Palmer ; Arizona, Palmer ; Mt. Agassiz, Lemmon. These plants 

 with their exserted petals and ligneous caudices best represent Dr. 

 Watson's species as described, Palmer's no. 41 being the first men- 

 tioned type. 



Var. (?) Parishiorum. Smooth or minutely glandular-pubescent : 

 caudex scarcely ligneous, densely multicipital : stems slender; nodes 

 not conspicuously enlarged : leaves chiefly basal : petals narrowed at 

 the base, shorter than or barely equalling the sepals, the latter fully 

 3 lines in length : stamineal glands very large. — A. macradenia, Wats. 

 1. c. xvii. 367 in part. — Common on mountains bordering on the Mojave 

 Desert, S. B. $ W. F. Parish, no. 1330. 



+_ «_ ^ Sepals lanceolate to lance-linear, attenuate, equalling or exceeding the 



petals. 

 ++ Flowers cymose, not densely aggregated. 

 A. Fendleri, Gray. Rather pale and glaucous, finely glandular- 

 pubescent above: stems numerous, erect, leafly, 4-15 inches high, 

 closely aggregated upon the summit of a thick root: basal leaves 

 setaceous, gramineous, ciliolate or quite smooth, 2-4 inches in length, 

 somewhat pungent ; the cauline gradually shorter, connate and sheath- 



