480 BOB AGIN A CE^ lappdla 



EEITEICHIUM 



bracted: pedicels very short, stout, not deflexed in fruit: calyx-lobes lan- 

 ceolate, becoming unequal and spreading : corolla blue, about a line broad : 

 nutlets rough-granulate or tuberculate on the back, the margins with a 

 double row of slender and distinct prickles or these irregularly over most 

 of the back. In waste places, Idaho and eastward. Naturalized from Eu. 



L. Texana Britton Mem. Torr. Cliibv, 275. Echinospermum Re- 

 dowskii var. cupulatum Gray. Hispid-hirsute annual : stem 2 inches to 2 

 feet high, diffusely branching from the base : leaves linear or linear-oblong, 

 mostly obtuse, the lower narrowed into petidles: racemes loosely flowered, 

 leafy-bracted; ptjdicels stout, a line long, not deflexed in fruit : corolla nar- 

 row-funnelform with rounded lobes, about a line broad, but little longer 

 than the linear-lanceolate sepals : nutlets with acuminate ovate papillose- 

 tuberculate disk, the marginal prickles broadened and thickened below 

 and usually united into a wing or border which indurates and enlarges for- 

 ming a cup with tha margin more or less incurved at maturity, sometimes 

 only the tips of the prickles free. Eastern Oregon and Washington to 

 Nevada, Texas, Nebraska and Brit. Columbia. 



L. Fremontii. Echinospermum Fremontii Torr. P. R. R. Rep. xii, 46, 

 E. RedowsMi var. occidentale Watson. Soft-pubescent with white hairs : 

 stem erect, 6-18 inches high, from an annual root, at length diffusely much 

 branched : leaves linear to spatulate or lanceolate ; those of the stem grad- 

 ually reduced to subulate bracts of the open panicle : pedicels a line long, 

 erect in fruit ; sepals linear, longer than the nutlets : corolla inconspicuous, 

 but little if at all exceeding the calyx : disk of the nutlets acuminate-ovate, 

 beset with sharp white processes ; prickles of the margin long and slender, 

 not rarely confluent at their flat bases and more or less cupulate; scar long 

 and narrow, occupying most of the ventral angle. Common throughout 

 the dry interior from Brit. Columbia to California. 



6 EKITRICHIUM Schrad. Diss. Asperif. 



Low perennial or annual herbs with petioled radical leaves and 

 small white or blue flowers. Calyx 5- parted or merely 5-lobed, 

 open and but little enlarged in fruit. Corolla with a short tube 

 and subrotate limb, the fornicate appendages almost closing the 

 throat. Stamens 5, inserted on the tube of the corolla and in- 

 cluded in its throat. Ovary 4-lobed : style short. Nutlets ob- 

 liquely ascending, or depressed and nearly horizontal, with trun- 

 cate-camplanate back, bordered by an acute winged or at length 

 revolute entire, dentate or spinulose border. 



E. Howardl Eydb. Cynoglossum Howardi Oray. Silky-canescent 

 and silvery : depressed cespitose : lower leaves linear-spatulate, 6-10 lines 

 long ; those of the short flowering stems linear : flowers few in the sparsely 

 bracted cymes : calyx-lobes linear-lanceolate : corolla bright blue, 4-5 lines 

 in diameter : nutlets very smooth, obliquely truncate on the back, wingless 

 but the_ margin of the ovate acutish and flat or slightly depressed dorsal 

 disk with a sharp edge, and its face either smooth or minutely papillose 

 and pubescent. On the highest parts of the Cascade Mountains of Wash- 

 ington and the Eocky Mountains of Montana. 



E. aretioides DC. Prodr. x, 125. Silky-sericeous;>ith long][white 

 hairs : densely cespitose in depressed pulvinate tufts, 1-2 inches high : 

 leaves from lanceolate to ovate, 4-6 lines long, mostly acute : flowers ter- 

 minating short densely leafy stems, short-pedicelled : lobes of the calyx 

 linear-lanceolate, about a line long, equalling the tube of the corolla : limb 

 of the corolla bright blue, 2-3 lines in diameter; nutlets with a crest-like 



