Genus 9. 



LILY FAMILY. 



5o7 



3. Erythronium mesachoreum Knerr. 

 Midland Adder's-tongue. Fig. 1267. 



Erythronium mesachoreum Knerr, Midland Col- 

 lege Monthly 2: 5, 1891. 



Corm ovoid, 10" high or less, not developing 

 offshoots, the new corms formed at or within 

 the base of the old one. Leaves narrowly 

 oblong or linear-oblong, not mottled, 4'-io' 

 long, i'-i' wide, somewhat folded; flower 

 lavender tinted, l'-2' long; perianth-segments 

 not recurved, sometimes a little spreading; 

 style slender; stigmas recurved; capsule obo- 

 void, larger than that of E. albidum, ¥-i¥ 

 high. 



On prairies, Iowa to Missouri, Nebraska and 

 Kansas. Blooms before E. albidum when the two 

 grow in proximity. The flowering plants are said 

 to appear before the 1 -leaved flowerless ones. 



4. Erythronium propullans A. Gray. 

 Minnesota Adder's-tongue. Fig. 1268. 



Erythronium propullans A. Gray, Am. Nat. 298. 

 pi. 74- 1871. 



Corm ovoid, 10" high or less, not develop- 

 ing offshoots. Stem ascending, 6'-8' long, 

 bearing a fleshy curved offshoot 1/-2' long 

 from a slit near the base of the petiole-sheath; 

 leaves oblong, acute, 2'-4' long, slightly mottled 

 or green ; flower rose or pink, about i' long, 

 borne on a filiform peduncle shorter than the 

 leaves, perianth-segments with a yellow base, 

 apparently not recurved, none of them auricled ; 

 stigmas mere ridges. 



In rich woods, Minnesota. May. 



10. CALOCHORTUS Pursh, Fl. Am. Sept. 240. 1814. 



Branched or simple herbs, with coated corms, narrowly linear leaves and large showy 

 peduncled flowers, erect in the following species. Perianth-segments separate, spreading or 

 connivent, yellow, blue, purple, white or variegated; the 3 outer sepal-like, narrow; the 3 

 inner petaloid, giand-bearing, and barbed or spotted within, sometimes with a nectar-pit 

 near the base. Stamens 6, hypogynous; filaments short, subulate; anthers erect, linear or 

 oblong. Ovary 3-celled ; ovuies numerous ; style very short or none ; stigmas 3, recurved. 

 Capsule oblong or linear, 3-angled, mostly septicidal, the valves sometimes 2-cleft. Seeds 

 flat. [Greek, signifying beautiful herb.] 



About 35 species, of western North America and Mexico. Type species : C. elegans Pursh. 



Anthers obtuse ; gland of inner perianth-segments orbicular or oval. 

 Anthers acute ; gland transverse, curved or reniform. 



1. C. Nuttallii. 



2. C. Gunnisoni. 



