44 Flora of the Palousc Region 



middle of the stem and thus appearing basal: flowers large, nod- 

 ding, braetless, solitary or several: perianth-segments separate, 

 lanceolate, oblong or oblanceolate: stamens 6, hypogynous, shorter 

 than the perianth: ovary sessile, 3-celled; ovules numerous or 

 several in each cavity. 



E. grandiflorum Pursh. Scape 15-30 cm. tall: conn elongate: leaves (lark 

 green, oblong-lanceolate, acute, 10-20 cm. long; petioles short, grooved 

 above: flowers solitary or 2-6 in a cluster: perianth lobes yellow, pale at 

 base, becoming recurved: anthers dark reddish: capsule oblanceolate, atten- 

 uate at base, 2-3 cm. long. Abundant on north hillsides. 



67. CALOCHORTUS. 



Branched or simple herbs with coated corms: leaves narrowly 

 linear: flowers large, showy, erect, peduncled: perianth-segments 

 separate, spreading, or united, whitish, purplish or variegated; 

 the three outer sepal-like, narrow; the three inner petal-like, gland- 

 bearing, and bearded or spotted within: stamens 6, hypogynous: 

 ovary 3-celled; ovules numerous. 



Flowers whitish: petals hairy. C. EEEGans. 

 Flowers pink. 



Petals obtuse, with peacock-eye spot at the base. C. niTidus. 



Petals acute or acuminate, yellow at base. C. macrocarpuS. 



C. elegans Pursh. Low, the stems 5-15 cm. tall, bearing a single lanceo- 

 late leaf, which much exceeds the stem: flowers solitary, or 2-5 in a cyme, 

 the pedicels ascending, 2-6 cm. long, each subtended by a lanceolate-acum- 

 inate bract: sepals broadly lanceolate, acuminate, greenish or purplish, 

 shorter than the petals: petals ovate, obtuse, greenish-white with a purple- 

 violet blotch at base, very hairy on the upper surface; nectary covered by a 

 fringed scale. Common especially in open pine woods. 



C. nitidus Dougl. Stems slender, 30-50 cm. tall: cauline leaves 2, the 

 lower nearly as long as the stem: flowers usually 2-4 in an umbel-like cyme: 

 sepals lanceolate, acuminate, 2-3 cm. long, scarious-margined, purple tinged: 

 petals cuneate-obovate, truncate or rounded, lilac-purple, sparsely hairy over 

 the upper surface, about 4 cm. long; nectary oblong, covered with a small 

 densely hairy scale, the whole surrounded with several arched bands of yel- 

 low and purple: capsule oval, acuminate, prominently winged, 2-3 cm. long. 

 Common in low meadows. 



C. macrocarpuS Dougl. Stems stout, 30-60 cm. tall: leaves 3-5, involute, 

 narrow, 7-15 cm. long: flowers 1-4: sepals greenish or purplish, lanceolate, 

 acuminate, scarious margined, 3-5 cm. long, equalling the petals: petals 

 broadly obovate, abruptly acuminate, pink-purple, paler toward the base; 

 nectary oblong, hairy: capsule lance-oblong, not winged, 3-4 cm. long. Dry 

 hills, quite common. A white flowered form rarely occurs. 



