WOOTON AND STANDLEY FLORA OF NEW MEXICO. 127 



Order 13. LILIALES. 



KEY TO THE FAMILIES. 



Styles wanting 18. CALOCHORTACEAE (p. 127). 



Styles present. 



Styles distinct 19. MELANTHACEAE (p. 128). 



Styles united. 



Capsules septicidal; petals and sepals very unlike. 



18. CALOCHOIITACEAE (p. 127). 

 Capsules loculicidal; sepals and petals nearly alike. 



Sepals and petals chaffy 20. JTJNCACEAE (p. 130). 



Sepals and petals not chaffy. 



Shrubby plants with caudices, or trees. 



21. DRACAENACEAE (p. 135). 

 Herbs with bulbs, corms, or rootstocks. 



Plants with elongated horizontal rootstocks. 



22. CONVALLARIACEAE (p. 138). 

 Plants with bulbs or corms or short erect rootstocks. 



Flowers in umbels, at first included in and later subtended 



by a scarious involucre 23. ALLIACEAE (p. 140). 



Flowers solitary or racemose (in Leucocrinum by the 

 shortening of the axis apparently umbellate), without 

 involucres. 



Plants from bulbs or corms 24. LILIACEAE (p. 143). 



Plants from elongated tuberous roots. 



25. ASPHODELACEAE (p. 144). 



18. CALOCHORTACEAE. Mariposa lily Family. 



1. CALOCHORTTJS Pursh. Mariposa lily. 



Low bulbous plants with, narrow grasslike leaves; flowers lai^e, showy, pale yellow, 

 lilac, or bright yellow, borne on slender glabrous scapes. 

 Several species are not rare in cultivation. 



KEY TO THE SPECIES. 



Flowers bright yellow; plants low, 8 to 20 cm. ; gland at the base of 



the petals longer than broad ; anthers obtuse 1. C. aureus. 



Flowers pale yellow to lilac; plants taller, 20 to 40 cm.; glands and 

 anthers various. 

 Anthers obtuse; glands orbicular or nearly so; petals 35 mm. 



long or less 2. C. nuttallii. 



Anthers very acute; glands much broader than long; petals 35 



to 40 mm. long 3. C. gunnisonii. 



1. Calochortus aureus S. Wats. Amer. Nat. 7: 303. 1873. 



Type locality: "On sand-cliffs, Southern Utah." 



Range: Southern Utah to Arizona and northwestern New Mexico. 



New Mexico: Fort Wingate; Gallup; Farmington. Open hills, in the Upper 

 Sonoran Zone. 



One of the lowest species of the genus, seldom exceeding a height of 20 cm.; leaves 

 slender, very long for the size of the plant, often recurved; probably the handsomest 

 of our species. 



