i36 



Muhlenbergia, Volume 5 



Platvcarpos 

 Annuals, often with decumbent branches from the base: 

 cotyledons not petioled, broad and clasping, usually persistent: 

 petioles with a membranous, stipular dilated, strongly 3-nerved 

 base, the stipules proper lanceolate or subulate, usually situated 

 near the summit of the dilated part: flowers either scattered or 

 verticillate; keel glabrous, moderately curved dorsally, almost 

 straight along the inner edges: pods ovate, about 1 cm. long, 

 usually 2-seeded. 



Flowers in terminal racemes, sides of the banner more or 

 less reflexed 

 Racemes equalling or shorter than the leaves 

 Flowers blue or purple, little exceeding the nearly 



equal calyx lobes L. Shockle\ i 



Flowers violet, fading pale 

 Upper calyx lobe 2-parted, low •< r entire, much 



shorter than the flowers L. pusillus 



I Fpper calyx lobe 2-divided, with a broad sinus, 



the lower 2-toothed L. dispersus 



Flowers violet even in age 



Upper calyx lobe obsolete, represented by a bractlet 

 at the sinus, lower entire, nearly as loug as the 

 flower L. brevicaulis 



Racemes commonly overtopping the leaves 

 Flowers verticillate, at least below 

 Mowers white or purple tinged; upper calyx lube 

 scarious, notched, lower green, much longer, 

 3-toothed L. malacophyllus 



Flowers not verticillate 

 Flowers deep violet-purple; banner wtth a yellow spot 

 ( ■il\ ■-. pubesi ent, the upper lobe green, 2-parted, 



lower tw ice as long, 2-toothed 

 ( 'al\ x glabrous, the upper lobe green, entire, lower 

 tw ice as long, entire or slightly 3-tOOthed 



11;. \ oculatus 



odoratus 



LUPINUS SHOCKLEY] Wats. Proc. Am. Acad. 22: 470. 1887. 

 Nearly acaulescent, 5 to 10 cm. high with a spread twice as 

 wide-, the lowermost petioles and peduncles horizontal or nearly 

 so, densely silky villous throughout except the upper surface of 

 the leaves, the hairs more spreading on the petioles, peduncles 

 and pedicels: petiole three or four times longer than the blade; 

 leaflets 9 to 12, rather thick, broadly spatulate or oblanceolate, 

 about 8mm. long, 301 4mm. wide, glabrous above: peduncles 



