OP ARTS AND SCIENCES. 93 



Castilleia cinerea. E grege C. pallidce et 0. viscidulce, multi- 

 caulis, spithamaja ad subpedalem, molliter cinereo-pubescens ; caulibus 

 adscendentibus conferte foliosis ; foliis parvis (semipollicaribus ses- 

 quilineam latis) lineari-laiiceolatis suberectis integerriinis, superioribus 

 tritidis, floralibus 3-5-fidis spatbulato-dilatatis luteo-tinctis viscido- 

 glandulosis ; spica brevi densa ; calycis segmeutis bipartitis, lobis 

 linearibus ; galea coroUoe brevi-oblouga truncata tubo quadruple bre- 

 viore labio obtuse tricrenato 3-4-plo lougiore ; stigrnate disciformi 

 maximo. — S. E. California, on rocky hillsides of Bear Valley in the 

 San Bernardino Mountains, 1882, S. B. & W. F. Parish. 



Castilleia plagiotoma, (§ Calyx normaliter bilabiatus, labiis 

 latis, postico emarginato, antico parum longiore obcordato-bitido.) 

 Bipedalis e radice crasso jDerenni, gracilis, rauiosa, inferne glabella ; 

 spicis inferne sparsifloris cum bracteis calycibusque cinereo-pubescenti- 

 bus vel tomentulosis ; foliis imis angusto-linearibus, superioribus trifidis 

 lobis linearibus, fioralibus 3-5-fidis ; calyce oblongo, labiis tubo paullo 



Ser. A. Calyx-teetli sliort, equal, broaJly trianj^ular or ovate, not svirpassing 

 tl)e turgid-ovate mature capsule: corolla-tube pubescent or puberulent: stem 

 strict, niostly simple, nakeil and pedunculiform at summit. 



B. Americana, L. Leaves broad and dentate : calyx-teeth acute. The com- 

 mon Northern species. 



B. ELONGAT.\, Swartz. Leaves narrower, less dentate or entire: calyx-teeth 

 obtuse. — W. Indies, Florida, Texas, and doubtless iu the eastern part of 

 Mexico. 



Ser. D. Calyx-teeth short, triangular, unequal (the mouth oblique), barely 

 equalling the gibbous capsule • corolla-tube glabrous. 



B. OBLiQUA, Benth. in DC. Prodr. x. 498. Mexico. To this belongs a plant 

 from Orizaba, Dotteri, 94, and a part of the specimens distributed under no. 177, 

 3(i5, from coll. Ervendberg, near Tantoyuca. 



Ser. C. Calyx-teeth subulate, equal or nearly so, in fruit surpassing the 

 straight but somewhat oblique capsule : stems simple or branched, leafy up 

 to the infloresence. 



* Corolla-tube pubescent. 



B. pir.osA, Benth. Bot. Sulph. without char., & DC. Prodr. 1. c. under B. h'tho- 

 spermifolia. Sometimes rather stout and 2 feet high, sometimes low and slender : 

 radical leaves obovate or oblong, upper lanceolate to linear, the larger ones not 

 rarely with a few teeth: tube of liie corolla barely twice the length of the 

 calyx, appressed-pilose outside. — B. clongota, var. pilosa, Cham. & Sclilecht. in 

 Linn. viii. 24-3. B. lilhospermijolia, Benth. in DC. 1. c, mainly ; Gray, Proc. Am. 

 Acad. V. 186 (pi. Ervendberg) in part. B. elontjala, Hemsl. Biol Centr.-Am. ii. 

 457, at least in great part — Mexico, in various forms ; among them coll. Bour- 

 geau, 884 in part, 2900, Srhaffner, &c., S. Arizona, Lemmon, 2880, the var. Ari- 

 zonica, indicated above. B. lithospermifoUa, HBK., is from S. America, and is 

 said to have a glabrous corolla with tube thrice the length of the calyx, the 



