OF ARTS AND SCIENCES. 21 



appendages), and adopted in the Botany of California, we must now 

 extend so as to take in Ptilomeris, which certainly cannot go with 

 Actinolepis. As to the carination and internal saccation or folding of 

 the involucral bracts along the axis or at base, partially embracing a 

 subtended akeue, this is quite as distinctly seen in Nuttall's Dichceta, 

 and there are traces of it in the typical species of Baeria. Some 

 additional species having recently been recognized, a key to those now 

 known is appended.* 



* BAERIA, Fisch. & Meyer, extended. 



§ 1. EuBAERiA. Pappus when present uniform (rarely unequal), of entire 

 palese or paleaceous-based awns : leaves entire except in B. plalycarpha : ligules 

 well exserted. 



* Akenes with convex or narrowed summit and therefore comparatively small 

 areola, mostly glabrous or glandular and papillose : pappus aristiform or com- 

 monly none : lieads comparatively large. — Baeria, Fisch. & Meyer. 



B. MACRANTHA. At loHst sometlmes perennial (all others are annual), rather 

 etout; leaves somewhat 3-nerved and obtuse, hispidly ciliate below ; involucral 

 bracts about 12, tliickish-herbaceous ; ligules elongated ; pappus mostly none. 

 — B. chrysostoma, var. inacrantha, Gray, Proc. Am. Acad. ix. 100, and Bot. Calif. 

 Burriella chrysostoma, var. macrantha, Gray in Pacif. R. Rep. iv. 106. — Var. 

 PAUciARisTATA. Lower, clearly perennial, leafy only toward base ; rays shorter ; 

 akenes scabrous with acute conical papillae ; pappus not rarely present, of 1, 2, 

 or sometimes 3 subulate and flattened chaffy awns rather than pale£e, ather 

 shorter than the akene. — Mendocino Co., Bolander, Primjle. 



B. CHRYSOSTOMA, Fiscli. & Meyer. Bracts of involucre 7 to 12, or fewer in 

 depauperate specimens; linear-clavate akenes either wholly smooth or sprinkled 

 with glandular atoms and papillffi ; pappus always wanting. 



* * Akenes with broader and truncate summit, usually bearing a paleaceous 

 and mostly awned pappus (but this occasionally wanting, perhaps in every 

 species), more or less hispidulous and 4-angled, not glandular. 



■t- Involucre and commonly herbage hirsute-pubescent, the leaves mostly hirsute- 

 ciliate toward base : plants slender, very variable in size according to season 

 and station. 



B. GRACILIS, Gray, 1. c. Bracts of involucre and rays 10 to 12 or reduced to 

 5 or 6 ; pappus when present of 2 to 5 awned palese (the smaller number usually 

 in the ray), which about equal the length of the akene. — Biirrielia gracilis and 

 B. tenerrima, DC. Prodr. B. hirsuta, Nutt., a form which wants the pappus. The 

 original of Douglas has 3 or 4 small lanceolate palese of the pappus tapering 

 gradually into the slender awn ; it therefore approaches the extreme form in 

 that direction, i. e. Var. aristosa, in which the awn is very gradually and incon- 

 spicuously widened downward, as represented by Burrielia (jracilis, Hook. Bot. 

 Mag. t. 3758. The opposite extreme is Var. paleacea, with awns abruptly 

 dilated at base into an oval or ovate palea. This is Burrielia longifoUa and B. 

 parriJJura. Nutt. 1. c. 



B. cuRTA. Heads only 2 or 3 lines high; bracts and rays 8 or 10; pappus of 



