20 SYNOPSIS OF THE FLORA OF COLORADO. 



LUPINUS PARVIFLORUS, ]S"utt. Watson's Rev., 1. c., p. 531. Strict, erect r 

 slender, 2-3 high, at length branching; pubescence scanty, short,, 

 appressed, the calyx and pedicels silky ; stipules setaceous ; leaves rather 

 distant; leaflets 5-11, oblanceolate to obovate, ! 7 -2 7 long, acute or 

 obtuse and niucronulate, glabrous above, the lower leaves snorter than 

 the petioles ; raceme J-l long, slender, bracts linear-subtulate, equal- 

 ing the calyx ; flowers subverticillate or scattered, the slender pedicels 

 l"-*-2" long ; calyx-lips nearly equal, the upper 2- toothed; petals light- 

 blue, equal, 3"-4" long, keel ciliate or naked; pod J 7 long, 2-4-seeded r 

 pubescent. Very abundant near the Twin Lakes, Porter and Coulter. 



LUPINUS ARGENTEUS, Pursli. Watson's Rev., 1. c., p. 532. Erect or 

 ascending, l-2 high, slender ; pubescence minute, silky, appressed ; 

 stipules small; leaflets 5-8, linear- lanceolate, f'-lj' long, acute, smooth 

 above or nearly so, about equaling the petioles; racemes 3 7 -6 7 long, 

 nearly sessile ; flowers subverticillate or scattered, pedicels #'-1" long; 

 calyx campanulate, gibbous but not spurred at base, minutely bracteo- 

 late, upper lip broad, 2-toothed, the lower subentire slightly longer ; 

 petals blue or cream-colored, equal, 3"-4" long, the banner very broad, 

 naked or subhairy, keel naked or subciliate; ovules 5-3; pod f 7 -!' long. 



Yar. DECUMBENS, Watson. (L. decumbens, Torr.) Raceme dense and 

 many-flowered; stein usually stouter and more leafy. Dr. Smith ; Bran- 

 degee ; Canby; Coulter ; Porter. 



Yar. ARGOPHYLLUS, Watson. With the habit of var. decumbens, but 

 more copiously silky-pubescent, the leaflets nearly or quite equally so 

 upon both sides, longer than the petioles ; flowers larger, 5 77 -G 7/ long, 

 blue or ochroleucous, the calyx decidedly spurred. Approaching nearly 

 to D. laxiflorm. Brandegee. 



LUPINUS C^ESPITOSUS, iNutt Watson's Rev., 1. c., p. 533. Crespitose 

 dwarf, 2 7 -4 7 high, nearly stemless, silky-hirsute; leaflets 5-7, oblong- 

 lanceolate, attenuate at base, much shorter than the petiole; stipules 

 adiiate, subulate ; spikes sessile ; densely flowered, shorter than the 

 leaves ; bracts setaceous, deciduous ; calyx bracteolate, the upper lip 

 2-parted, lower obscurely 3-toothed ; petals pale-blue, equal, 3 /7 -4 77 long; 

 legume villous, 3-4-seeded. " West of the Snowy Range on Blue River.' 7 

 Hall & Harbour, 96. In the Sierra Madre Range, Coulter. 



LUPINUS PUSILLUS, Pursh. Watson's Rev., I. c., p. 539. Annual, low, 

 very hirsute with long spreading hairs ; stems 3 / -10 7 high, branching 

 from the base; leaflets 3-7, more usually 5, cuiieate-oblong or oblan- 

 ceolate, f'-li' long, narrowed at the base, acute or obtuse, smoother 

 above, about half as long as the petioles ; raceme spicate, usually short- 

 peduncled, 2 7 -3 7 long; flowers alternate, wings equaling the keel; 

 bracts persistent ; calyx ebracteolate, upper lip 2-cleft, shorter than the 

 subentire lower one ; petals purple or rose-color, 4 7/ long, equal ; legumes 

 over J 7 long, very hirsute, about 2-seeded ; seeds orbicular, flattened. 

 Hall & Harbour, 94 ; B. H. Smith ; Brandegee. Near Denver, Coulter ; 

 Porter. 



TRIFOLIUM LONGIPES, Xutt. Somewhat pubescent; root creeping; 

 stems erect or ascending, simple, 3 7 -l high ; petioles slender; leaflets 

 linear-lanceolate, serrulate, silky-pubescent beneath ; radical ones often 

 oval or oblong; stipules semi-lanceolate, acuminate; heads of flowers 

 sub-globose, ebracteate, on long peduncles ; flowers ochroleucous, rarely 

 purple, frequently deflexed in fruit ; calyx-teeth setaceous, longer than 

 the tube, nearly equal; petals lanceolate; ovary 4-5 ovtiled. Parry* 

 Mount Lincoln at 12,000 feet altitude, Coulter. 



