MICROCALA GENTIAN A CE^E 443 



ERYTHR^CA 



M. quadrangularis Griseb. DC. Prodr. ix, 63. Stem filiform, simple 

 or branched, 2-3 inches high : leaves 2-3 pairs, oval or oblong, 2-3 lines 

 long: flowers solitary at the summit of the stem or branches: calyx at 

 first oblong-campanulate, in fruit broader, truncate at top and bottom, 

 strongly 4-angled; the teeth short and subulate: corolla saffron-yellow, 

 3 lines long : capsule ovoid. In prairies, Umpqua Valley Oregon to Calif. 



2 ERYTHEMA Neck. Elem. ii, 10. 



Low herbs with sessile entire leaves, and small or middle sized 

 commonly numerous pink white or yellow flowers in cymes or 

 spikes. Flowers 5-merous, sometimes 4-merous. Corolla sal- 

 verform with either a short or rather long tube ; the lobes often 

 contorted and becoming narrower with age. Filaments slender. 

 Anthers oblong or linear, commonly exserted, twisting spirally 

 in one or two turns after opening. Style filiform : stigma 2-lobed, 

 the lobes from oblong to fan-shaped. Ovary 1-celled : the pla- 

 centae more or less intruded. Capsule from oblong-ovoid to 

 fusiform, 2-valved. 



E. Mnhlenbergii Griseb. DC. Prodr. ix, 60. "A span or less high, 

 at length fastigiately branched from the base, cymosely flowered at sum- 

 mit: leaves oblong, obtuse; the floral lanceolate: pedicels short or hardly 

 any in the forks; the lateral often as long as the flower, but 2-bracteolateat 

 summit: lobes of the rose-red corolla oval, very obtuse or re tuse, in age 

 merely oblong, 2 or almost 3 lines long, much shorter than the tube : 

 anthers oblong: seeds short-oval. " Western Oregon and California. 



E. Douglasii Gray Bot. Cal. i, 480. Stem slender, 6-12 inches high, 

 loosely and paniculately branched usually sparsely flowered : leaves from 

 oblong to linear, mostly acute : flowers all on strict and slender peduncles 

 or pedicels : lobes of the pink corolla ob'ong, obtuse, at most 3 lines long, 

 mostly half the length of the tube : anthers oblong : stigma fan-shaped : seeds 

 globular. In moist places, Oregon and California to Utah and Wyoming. 



E. Nuttallii Watson Bot. King 276, t, 29. Stem erect, loosely bran- 

 ched, 3-1^ inches high: leaves linear-oblong, 6-12 lines long, acute: pan- 

 icle dichotomous, few-flowered: flowers on elongated slender peduncles: 

 lobes of the pink corolla elliptic-oblong, 2-3 lines long, acute: stigma 

 somewhat cup-shaped, slightly 2-lobed : capsule 4-7 lines long, becoming 

 nearly twice the length of the'calyx : seeds oblong. Nevada to Idaho and 

 Utah. 



E. minima* Stem filiform, simple or sparingly branched, 1-2 inches 

 high : leaves lanceolate, acute, 1-3 lines long: flowers racemosely disposed, 

 all pedicellate : lobes of the pink or white corolla lanceolate, acute, 2 lines 

 long, more than half as long as the tube: anthers oblong : lobes of the style 

 fan-shaped seeds globular, strongly pitted. In wet places, throughout 

 western Oregon. 



E. curvistamenea Wittrock. Stem slender 2-4 inches high, simple 

 or sparingly branched: leaves oblong-lanceolate or the upper ones linear, 

 acute : flowers on long slender pedicels : lobes of the light red corolla linear- 

 lanceolate, 2 lines long, half as long as the tube : summit of the filaments 

 curved downward with the anthers in a tangled mass about the stigma: 

 seeds not seen. Lincoln County Washington. 



3 GENTIAN A Tourn. L. Gen. n. 322. 



Erect herbs with chiefly sessile opposite leaves and conspicu- 

 ous flowers that usually open only in sunshine. Calyx common. 



