30 LEGUMINOS^. 



the forms is more than 10-striate, the nerves numbering 15 or 20. The 

 flaccid herbag-e, prostrate habit, l>road leaflets and entire calyx-teeth 

 make this easily distinguishable from T". oliganihuin and tridenlaluiti, 

 with which it is confused in the " Botany of California." 



26. T. appendiculatiim, Loja. Giorn. Bot. Ital. xv. 181 (1883 ) ? Glabrous, 

 flaccid, diffuse: leaves long-petioled: leaflets cuueate-obovate or obcordate, 

 serrulate-spinulose, mucronulate at apex : heads hemispherical, 1 in. or 

 less in breadth : fl. purple : calyx-teeth lanceolate-linear, entire, longer 

 than the tube : keel of the corolla rostrate-attenuate, longer than the 

 wings. — A. plant much smaller than described by Lojacono under this 

 name, but having just the floral structure attributed to the species, 

 certainly distinct from T. var legal tan, which it most resembles, has been 

 collected by Mr. V. K. Chesnut at Lake Merritt, Oakland. I also saw 

 the same in the Torrey herbarium, from Aubxirn, BulainJer (No. 4539), 

 under the wrong name, " T. BiAanderi." 



27. T. oligranthuiii, Steud. Nom. i. 707(1841): T. pancijior inn, mitt 

 in T. & G. Fl. i. 319 (1838), not of d'Urville : T. filipes, Greene, Pitt. i. 66 

 (1887). Pale green, glabrous, erect, slender, with few ascending branches, 

 6 —18 in. high : upper leaflets linear, acute, 1 in. long, spinulose-serrate : 

 peduncles filiform, 2 3 in. long, exceeding the leaves : head small, 7 — 12- 

 flowered ; involucre reduced, laciniately divided : fl. pale purple and 

 white ; 2 — 3 lines long : calyx-teeth ovate-f.cuminate, pungent, entire, 

 equal, shorter than the 10-striate tube. — Common throughout the State, 

 along the borders of woods and thickets ; the most slender species, yet 

 always erect ; the herbage of a pale glaucous hue ; corolla with wings 

 meeting in front of the keel. In all other allied species they spread away 

 from it. Calyx laterally compressed in fruit, the segments appressed to 

 the obovate 2-seeded pod. May. 



28. T. Watsonii, Loja. Giorn. Ital. xv. 186 (1883). Erect, not slender, 

 4 — 12 in. high, glabrous, purplish : leaflets 1 in. long or more, from 

 narrowly elliptical to linear-filiform, the lower entire, upper remotely 

 spinulose-serrate : heads large, showy, hemispherical ; involucre small, 

 not deeply cleft : calyx oblong, 20-striate, the teeth I4 as long as the 

 tube, ovate, very abruptly contracted to a short pungent tip.— Near Chico, 

 Mrs. Bidtvell, Lr. Parry ; related to the next, but doubtless distinct. 



29. T. trideiitatuin, Lindl. Bot. Eeg. under t. 1075 (1827). Erect, 

 8 — 16 in. high, glabrous, neither viscid nor clammy : stipules setaceously 

 laciniate, erect : leaflets linear or lanceolate, sharply serrate : heads 1 in. 

 broad, the laciniate involucre much shorter than the flowers : fl. % i^- 

 long, bright purple with dark centre : calyx with 10-nerved tube, the 

 rigid segments broad at base, abruptly narrowed to a subulate spinulose- 

 tipped apex which is usiially subtended by a short stout tooth on each 



