215 



villous-pubesceiu; Ivs narrowly oblan- 

 eeolate, 2.5 cm long, not tomentose; 

 lower bracts as large, similar, pungent; 

 tube of me inv 2 mm long, the alt 

 teeui strongiy divergent, as long or 

 longer, fls nearly sessile, w or pinUish, 

 o mm Ion--- villous on the nerves, clelt 

 nearly to the middle; seg recurved, 

 somewhat undulate, oblong-ovate, 

 acutish, crenate, the inner ones about 

 the same len^^., but narrower; sta in- 

 serted at the base. 



bBtr: Campo; Qumtin! Baja mts! 

 CHORlZANTHfi JPKOCUMBI3NS Nutt. 



blender, procumbent, branching from 

 the base and diffuse, villous-pubescent, 

 often y'lsix-^lvs spatulate, 2.5 cm long 

 or less, not tomentose, bracts mostly 

 sm; inv 2-3 mm long, - the alt teeth 

 strongly divergent, about equaling u^e 

 tube, "uncinate; fls sessile, 2.5 mm long, 

 glabrous or somewhat villous, seg 

 equal, narrowly oblonsr, obtuse, entire; 

 sta inserted at the base. 



SBer! Quintin! CD (Parish 826). Forms 

 large yellowish-green patches on mesa or 



CHORIZAXTHE SPINOSA S. Watson. 



Resembling C. unraristata; bracts 

 more rigid, lanceolate, attenuate to a 

 long spine: involucral seg unequal, 1 

 or 2 often much the larger, all with 

 straight spines; fls w; lobes round- 

 obovate, entire, the alt ones a half 

 smaller. Near SBer (Lemmon)." 

 Watson, Bot Cal 2:481. 



Parish, Zoe 5:113, not SBer but Mo- 



Variety CRYPT ANTHA Curran. 



Mohave near Lancaster. (Curran). 

 CHORIZANTHE XANTI S. Watson. 



Watson, Am ac pr 12:272 (1877). 



Branching' diffusely from near the 

 base, 6-15 cm hi, villous-pubescent and 

 tomentose; Ivs ovate-oblong, 4-12 mm 

 lone, tomentose beneath; lower bracts 

 similar or linear-ot\anceolate; involu- 

 cres tomentose, in diffuse cymes, the 

 tube 4 mm long with strongly diverg- 

 ent teeth % as long or more, alt ones 

 much smaller; fls rose color, 5 mm 

 long, sessile, villous, seg linear-oblong, 

 entire, acutish, alt ones % as long; sta 

 inserted at base. 



San Gorgonio Pass (Parry); LA 

 (Nevin); SD Co. 



Type localities: "near Fort Tejon," 

 "SBer," and "San Gorgonio, Cal. 



Coville, CNH 4:190. 



Abrams, x>'l LA 114. "Common in 

 the chaparral belt of all our mts. 



Genus PTEROSTEGIA F. & M. 



slender ann diffusely dichoto- 

 l base, with opp Ivs and 



han the s ol tar v sessile 

 in f sca?rous and reticu- 



celv enclistJ? fhS ak ilb- 



ted, loosely enclosing tne a.K, giD 



2-saccate on the 'back. ex b 



Rpnth 



ouehout Cfll Ha U 72 

 or riPrnmbPiit rather stouL 1-4 

 m witn?Meadln* branches Vll- 



Ivs all 

 1 



otvledons ac 

 ~W lQ 



DRYMARIOIDES Nutt 

 Sts several from the base, 10-30 cm 

 ^n- or more; lower Ivs petioled, 4-12 

 mm ^np- fan-shaped, 2-lobed, the lobes 

 crenately toothed or slightly lobed; up- 

 P e ^ lv obovate-spatula.e, entire or 

 more or less toothed; bracts similar -2 



the lit 



nearly sessile, 4-5 mm long, glabrous 

 nv ^nr;plv villoua on L ^e midvein 

 L f s r pc } nLr the middle- leffoblon- 

 entire, t0 tne alt ones abSu't' h'al? as lon^ 

 and narrower; sta inserted at base. 



CHORIZANTHE^HURBERi S. Watson. 



Somewhat glandular-puberulent, usu- 

 ally about 1 dm hi, branching from 

 the base; Ivs 2.5 cm long, glabrous, 

 slightly ciliate; bracts oblong, more or 

 less united, 2-6 mm long; involucres 

 glabrous, chartaceous, triangular-pris- 

 matic, obscurely reticulated. 4-o mm 

 long, 1-2 mm broad, with 3 broad 

 straight awned spurs at oase and 3-5 

 broad short erect teeth; fls 1 or 2 on 

 slender pedicels, pubescent at base, 

 nearly 2 mm long; seg oblong-spatu- 

 late, obtuse or emarginate, the alt ones 

 slightly shorter. 



Abrams, Fl LA 113. 



Coville, CNH 4:189. 



Centrostegia Thurberl Bentham, in 

 DC Prodr 14:27 (1856). 



Type locality: "in collibus arenosis 

 ad San Felipe aliforniae." 



Mohave, near Colorado river (Parish 



about 15 mm long, sessire; 

 ex-lobes lanceolate 



Abrams, Fl LA 111. Common and 

 general below 4000 feet. The whble 

 Plant often reddish when growing in 

 exposed places. 



goville CNH 4:191. Panamint mts 

 Fisch & Mey, Ind Sem Petrop 2:48 



-o n ^ an 

 Tyoe locality : m portu Bodega 



novae Calif ormae. 



Cruz; R\a; Quad ; Qumtin ; SD! Ha L 

 Genus AI.TERNA1VTHERA Forsk. 



Ann or per branching herbs, with 

 opp (at least the lower) entire Ivs and 

 perfect or dioecious fls, in panicles or 

 hds, 3-bracted: sep 5: sta 5, united into 

 a short cup at base; sterile fil minute, 

 tootn-like; anth 1-celled; sty short; stig- 

 capitate or 2-lobed; sd vertical, lentic- 

 ular. 



ALTERNANTHERA ACHYRANTHA 

 R. Br. 



St prostrate, pubescent; 1-3 dm long; 

 Ivs smoothish oval or obovate, nar- 

 rowed into a petiole; hds mostly a(ll- 

 lary, solitary or clustered, dense, oval, 

 w; stp lanceolatt, spine-pointed, woolly 

 with barbed hairs on the back, the 2 



