628 PROCEEDINGS OF THE AMERICAN ACADEMY 



Var. Douglasii, includes also L. microphylla, Hook. Fl. Bor.-Am. 

 That passes along the drier coast of California into 



Var. subspicata, L. subspicata Hook. & Arn. ; Torr. Bot. Mex. 

 Bound, p. 71, t. 29 ; — a bushy and small-leaved form, with glandular 

 pubescence on the inflorescence, calyx, and corolla. 



Var. interrupta, L. interrupta Benth. PI. Harwegianas, is like it, 

 but glabrous and mostly glaucous ; the filaments perhaps less hairy 

 at base. 



Var. vacillans, L. Califomica Torr. & Gray, includes various 

 mostly stronger-growing, larger-leaved, and more climbing forms, with 

 or without the spreading scattered hairs, and the inflorescence, calyx, 

 etc., either conspicuously or obscurely glandular, — passing on one 

 hand into the last, on the other into the first variety or form. 



§ Xylosteum DC. (Xylosteum Adanson.) The limb or teeth of 

 the calyx cannot properly be said to be " deciduous " in any North 

 American species except L. involitcrata. 



L. INVOLUCRATA, Banks, was published one year earlier than the 

 volume which contains the character of L. Ledebourii of Eschscholtz, 

 although the latter's paper was communicated to the St. Petersburg 

 Academy two years before. The ample involucre consists of the 

 common pair of large foliaceous bracts, and within, decussating with 

 these, a pair of rounded and more scarious bractlets to each flower, 

 generally connate two and two by their contiguous edges. 



L. c^erulea L. Peduncle very short ; bracts subulate and longer 

 than the completely combined ovaries; bractlets none ; corolla obscure- 

 ly bilabiate, yellowish-white. In the Sierra Nevada of California and 

 northward in Oregon occurs the form with villous corolla, as in Eastern 

 Asia. In New England and north of it the corolla is nearly glabrous, 

 and also shorter. 



L. ciliata Muhl. Peduncles slender; bracts subulate and minute; 

 bractlets obsolete ; corolla yellowish-white, obscurely bilabiate, the lobes 

 short ; ovaries distinct. Confined to the northern line of the Atlantic 

 States and Canada; excepting Lyall's specimens from Pend Oreille 

 River, British Columbia, which appear to be of this species, although 

 the branches are erect and the leaves obtuse. 



L. Utahensis Watson, Bot. King, p. 133, is still uncertain for want 

 of good flowers. By the foliage, bracts, etc., it might be this north- 

 western form of the preceding ; but the single withered flower found is 

 only half as large, apparently purplish, and shortly but distinctly bila- 



