74 



umbel 8 to ]0-ra\cil, willi iiuohiLX'ls of linear or lanceolate acumi- 

 nate bractlets; rays J/^ to 1 ^ inches long; pedicels 3 to 4 lines 

 long: fruit broadly ellipt.'cal to orbicular, 3 to 8^4 lines loner, 

 scarcely emarginate, with wings broader than body, and rather 

 prominent dorsal and intermediate ribs: oil-tubes 2 to 4 on the 

 commissuial side. /'. Califoniicitiii C tv: R. Hot. (ia/x-lte, 

 xiii. 14a. 



California (Thos. Couller, Jlrdinhuo). [liiio wootlb ucar Monterey 

 (Ddiufhifi), San Luis Obispo (Joxcs). 



'J'liis species luis been so frequently mistaiicn in collections that we 

 were uiisloail nntil the typo had been examined. 



17. PSEUDOCYMOPTERUS. ^Mostly low (often ccspi- 

 tose) glabrous perennials from a thick elongated root, with bipin- 

 iiate leaves (shorter than the peduncles), no involucre, and invol- 

 ucels of narrow bractlets mostly longer than the white or yellow 

 Howers. 



This genus is constructed to contain a species that has been refeired 

 doubtfully to Thanpiiim and Ligutificum, and t ;/o others that have been 

 referred to CymoptcruH. That P. montanuH should be referred to Thaspinm 

 is no longer held. It seems generically distinct from Lir/usilicum on ac- 

 count of its broad lateral fruit-wings and irregular dorsal and intermediate 

 ribs, dorsal flattening of the fruit, depressed stylopodium, often solitary 

 oil-tubes, and yellow flowers. P. hi/ihuuilKM and P. ttiil.s(ilns are distinct 

 from Cijinoplei-Ks on account of their smaller fruit, which does not have 

 broad dorsal and intermediate wings, is dorsally flattened, and contains 

 proraim^nt strengthening cells. The throe species form a well-defined 

 genus. 



1. P. montanus. Stem erect, slender, 1 to 2 feet high: 

 lea\cs mostly with broad outline; leaflets cut into 3 or 5 oblong or 

 lanceolate segments, the upper often enliie: umbel to 12-raycd, 

 with involuccls of linear or setaceous bractlets longer than the 

 yellow Howers; ra\s (> to U lines h^ig; j)edicels about a line long: 

 fruit broadly oblong, about 2 lines long, with lateral wings (not 

 cohering) almost as broad as body, the doisal and intermediates 

 very variable (either ribbed or narrowly winged): oil-lubes 1 to 

 4 in the intervals, 4 to on the C(j:nmissural side: seed-face plane. 

 (Fig. 73.) — Thaspiiim {^i) montantini Gray, PI. FenJl. 57. 

 LigHsticitni nioxtanitin Benth. ^ Hook. Cien. Plant, i. 912 and 914. 



Colorado. New Mexico, and Arizona. 



Widely variable, especially in its folingc. Tll<^ following are the ex- 

 treme forms: 



