REVISION OF EPILOBIUM. 77 
Innovations various, never filiform. 
Rosuliferous, unbranched, not cespitose: leaves 
very blunt, crowded below: seeds as in the last 
QTOUP. cer eeccecccccccceccccce cere Davuricum. 
Annuals, with broad obovoid seeds and very decidu- 
ous coma. 
Dichotomous, glabrous or glandular: seeds 
large (1x2mmM.).......+++00++H. paniculatum. 
Simple or panicled, crisp-pubescent: seeds half 
OS lATYE..cceecccreees einen were coee H. minutum. 
Turioniferous: coma more persistent. Small plants. 
Branched: leaves small, acute, petioled: coma 
TEAGISN. 20... cccccccccces cove dee Leptocarpum 
Simple, or sometimes branched below in the 
first and cespitose in the last: leaves sessile 
or subsessile: seeds broader, with pale coma. 
Tomentose throughout and somewhat 
pilose......E. ursinum, var. subfalcatum. 
No long hairs: glabrous below or crisp- 
pubescent in lines only. 
Not cespitose: pubescence scanty: 
leaves obtuse, drying light, the upper 
nearly linear.. #. delicatum, var. tenue. 
Often cespitose: quite glandular above, 
even as to the subacute leaves which 
dry dark....-eeeees EB. saximontanum. 
Soboliferous and cespitose, glaucous: seeds broad, 
edie ss, Aas ae .E. glaberrimum. 
Cespitose by stolons, very slender-stemmed, not pilose, 
occasionally glaucous in the first: seeds elongated. 
Leaves erect, narrow, keeled below, 
anne E. Oregonense, var. gracillimum. 
Leaves more spreading, broader, not keeled, 
seene -E. clavatum. 
d. Leaves lanceolate to ovate, evidently toothed, veiny (or often 
subentire and less veiny in the last three), not revolute. 
Dichotomous, annual: pubescence not crisp: leaves slender 
stalked, acute: seeds very broad and obtuse, 
eeeeee B. paniculatum. 
Simple or nearly so, apparently annual: pubescence 
crisp,...---.-...--dwarf form referred to EZ. adenocaulon. 
Rosuliferous : not glaucous: leaves with at least short winged 
petioles. 
Flowers large for the group, the violet petals 6 to 10 
mm. long. Pacific species. 
Stem subtomentose, little branched: leaves elliptic- 
al, obtuse: fiowers protruding beyond the ter- 
minaglilOn Vel i oindcieierch apa dee + 34x: E. Watsoni. 
