360 E - Knoblauch: Allgem. u. specielle Morphologie u. Systematik d. Phanerog. 



f Rosuliferous, uubranched, not cespitose ; leaves very blunt, crowded 



below; seeds as in the last group E. Davurimm. 

 ff Annuals, with broad obovoid seeds and very deciduous coma. 



o Dichotomous, glabrous or glandulär; seeds large (1:2 mm) E. 



paniculatum. 

 oo Simple or panicled, crisp-pubescent; seeds lalf as large E. 

 minutum. 

 fft Turioniferous ; coma more persistent. Small plants. 



o Branched, leaves small, acute, petioled ; coma reddish E. lepto- 

 earpum. 

 oo Simple or sometimes branched below in the first and cespitose 

 in the last; leaves sessile or subsessile; seeds broader, with 

 pale coma. 



X Tomentose throughout and somewhat pilose E. %irsinum 

 var. subfalcatum. 

 XX No long hairs; glabrous below or crisp-pubescent in lines 

 only. 



§ Not cespitose; pubescence scanty; leaves obtuse, drying 

 light, the upper nearly linear E. delicatam var. tenue. 

 §§ Often cespitose; quite glandulär above, even as to the 

 subacute leaves which dry dark E. saximontanum. 

 tftt Soboliferous and cespitose, glaucous; seeds broad E. glaberrimum. 

 ttttt Cespitose by stolons, very slender-stemmed, not pilose, occasionally 

 glaucous in the first; seeds elongated. 

 o Leaves erect, narrow, keeled below E. Oregonense var. gracil- 

 limum. 

 oo Leaves more spreading, broader, not keeled, E. clavatum. 

 b. Leaves lanceolate to ovate, evidently toothed, veiny (or often subentire and less 

 veiny in the last three), not revolute. 

 a. Dichotomous, annual; pubescence not crisp; leaves slender-stalked, acute; 



seeds very broad and obtuse E. paniculatum. 

 ß. Simple or nearly so, apparently annual; pubescence crisp: dwarf form referred 



to E. adenocaalon. 

 y. Rosuliferous, not glaucous; leaves with at least short winged petioles. 



* Flowers large for the group, tho violet petals 6 to 10 mm long. Pacific 

 species. 

 f Stern subtomentose, little branched; leaves elliptical, obtuse; flowers 

 protruding beyond the terminal leaves. E. Watsoni. 

 •ff Glabrate below, more branched; leaves ovate-lauceolate, the upper 

 acute, 

 o Leaves crowded above; flowers hardly surpassing the uppermost 

 leaves; glandulär pubescence coarse and diugy above E. Francis- 

 canum. 

 (Young glandulosum and boreale might be sought here.) 

 oo Leaves more remote; flowers conspicuously protruding; pubescence 

 fiue, sometimes incurved — E. adenocaidon var. occidentale. 

 ** Flowers smaller, the petals 3 to 5 mm long. 



f Seeds obconical, beakless, 1.5 mm long; coma reddish; leaves lanceolate, 

 acute, sharply serrulate E. coloratum. 

 tt Seeds nearly ellipsoidal, about 1mm long, short beaked at summit; 

 coma white or pale, 

 o Leaves narrowly lanceolate. 



X Much branched: leaves often obtuse, not deeply serrulate, at 

 least the uppermost and the twigs silky E. holosericeum. 



