456 BOTANY. 



GASTILLEIA. 



Chiefly from the revision of the geiius by Dr. Gkay in the Jmer. Jour, of Science, Vol. XXXIII, pp. 

 335-339, (1862.) Mexican species omitted. 



§ 1. HEMICHKOMA or EUCASTILLEIA. Calyx (often incurved) deeply cleft anteriorly, slightly 

 hifid behind, usually 4-toothed. (Root perennial.) 



1. C. LiNARiiEFOl.iA, Benth. Leaves long, linear; calyx-teeth subulate; galea elongated, much ex- 

 serted ; usually glabrous. See page 228. 



2. C. LAXA, Gray. Cinereous-pubescent ; stems subdiffuse, branched ; leaves thin, linear-lanceolate, 

 2' long, 3" -wide, entire, not dilated at base ; the floral shorter than the calyx, red above ; flowers few, 

 crowded, short-pedicelled ; calyx very thin, colored, 1' long, teeth short and obtuse ; galea broad, slightly 

 falcate, 6-8" longer than the calyx, lobes of the lip very short, obtuse. — Arizona, (1490 Wright.) 



5 2. EUCHEOMA. Calyx cleft both before and behind, the segments entire, emarginate or bifid. 



* Eoot annual or biennial, 

 (a.) Leaves entire. 



3. C. AFFINIS, H. & A. Flowers more or less pedicelled ; calyx-segments narrow ; galea elongated. 

 See page 228. 



4. C. INDIVISA, Eng. Pilose-hispid ; cauline leaves linear-lanceolate, mostly rounded at base, the 

 floral ones obovate-dilated, rarely somewhat lobed ; flowers sessile ; calyx-segments broad, usually emar- 

 ginate ; galea short and shortly exserted. — W. Texas. 



(6.) Leaves laoiniately cleft. 



5. C. cocciNEA, Spreng. From N. England, Canada and the Saskatchewan to the upper districts of 

 the Southern States and Texas. 



* * Root perennial. 

 (a.) Floral leaves more or less dilated above and colored. 

 (1.) Villous-pubescent, or glabrous below, the pubescence toward the top of the stem spreading-pilose 

 or hirsute, more usually viscid. 



6. C. PARVIFLORA, Boug. Usually low, pilose or hirsute ; leaves mostly trifid or pinnately laciniate, 

 the floral ones red or yellowish. See page 229. 



7. C. PALLIDA, Kth. Taller, often glabrous or glabrate below; leaves linear to ovate-lanceolate, 

 mostly entire; floral leaves whitish or red. See page 229. 



8. C. LATIFOLIA, H. & A. Viscid-hirsute throughout, loosely branched ; leaves short, obovate, very 

 obtuse, mostly entire, the floral ones dilated at the apex, 3-5-lobed, red ; calyx-segments broad, 2-lobed 

 or emarginate ; corolla small. — California. . 



(2.) Tomentose, or with the pubescence upon the stem soft and entanged ; cauline leaves linear, 

 entire or trifid. 



(2".) Hoary ; calyx-segments dilated, subentire. 



9. C. FOLIOLOSA, H. & A. Floccose-tomentose, the hairs very much branched ; stems suffrutioose, 

 with the older leaves sometimes becoming glabrous ; galea slightly exserted beyond the spatulate-oblon"- 

 and usually retuse calyx-segments. — California. 



10. C. LANATA, Gray. Herbaceous ; white- woolly with an appressed webby tomentum ; flowers nearly 

 as iu the last but larger. — W. Texas, New Mexico and Northern Mexico. 



(2''.) Cinereous-puberulent or subtomentose ; calyx-segments most usually bifid; galea exserted; 

 leaves sometimes glabrous above. 



11. C. iNTKGEA, Gray. Stem loosely tomentose ; leaves (usually slightly tomentose) all entire, or the 

 floral ones somewhat lobed, rarely trifid ; flowers li' long, the galea larger (6-8" long) and the lip shorter 

 than in the next ; calyx 8-12" long, the lobes lanceolate.— Colorado to N. Texas, New Mexico and Arizona. 



12. C. PURPUREA, Don. Stem a little tomentose or cinereous ; leaves puberulent or glabrate, the 

 tipper ones usually entire and the floral ones trifid or laciniate; flowers 1' long, the lip 2-2^" lono- not 

 half the length of the galea. — ^Arkansas, Texas, and E. New Mexico. 



13. C. PLAVA, S. Watson. Villous-pubescent, puberulent above ; leaves woolly pubescent, the floral 

 ones deeply 3-oleft, yellow ; galea 4" long, exserted ; lip very short. See page 230. 



(i.) Leaves mostly 3-5-ol6ft with linear lobes, the floral ones not dilated nor colored ; calyx equally 

 cleft or more deeply cleft in front, the segments deeply bifid; corolla-lip more trisacoate-carinate 

 than in the preceding, the lobes half as long as the galea ; low, subviUous or suboiuereous. 



