833 



Gray, PI Fendl 43; bot Cal 1:223. 

 Davidson, PI LA Co 6. 



Genus LUDWIGIA Linnaeus. 



Aquatic or marsh per herbs, with the 

 aspect of Jussiaea, but the Ivs opp, 

 parts of the fl in 4's, a,nd the pet often 

 0: sta as many as the pet and alt with 

 them: ova broad at apex and usually 

 flattened, or crowned with a conical sty- 

 base: cap 4-celled, dehiscent by lateral 

 slits or terminal pores: sds minute^ 

 LUDWIGIA PALUSTRIS EII. 



Water purslane: glabrous, st 6-12* 

 long; Ivs obovate, acute or acuminate, 

 harrowed at base into a rather long 

 petiole, the whole If 8-12" long; pet 0, 

 or minute and r'ish; cap y'isn, erect, 

 broadly oblong, 1*6" long, more or less 

 4-sided, with a narrow longitudinal 

 band of tubercles on each side; the per- 

 eistent sep g. 



Jep-:on Erythea 1:13. 



Brewer & Watson, bot Cal 1:217. 



Canada to Mexico; S D! Oregon. Da 6. 

 tUDWiaiA DIFFU3A Greene. 



Greene, Fl Fr 227, based on Jussiaea 

 diffusa Forskaal; Muel, Erythea 1:61. 

 Africa; Australia; Am; pet y. 

 Variety CAIilPOBWICA Greene. 



Greene Fl Fr 227. 



Jepson, Erythea 1:14. "In marshes 

 near Lakeport." 

 LI D\VIG1A NATAKS Ell. 



Kan Bernardino (Parish 6S2), 



Genus BOISDUVALIA Spnch. 



Erect ann with alt Ivs: fls sm, in 

 leafy spikes or axy along the branches: 

 ox-tube (above the ova), short, obconic, 

 the lobes erect: pet 4, obovate, sessile, 

 2-lobed, p to w: sta 8, those opp the pet 

 shorter; anth basifixed: cap 4-celled 4* 

 valved. sessile. 

 BOISDUVALIA DENSIFLORA 8. Wat. 



Erect, commonly 1*4 hi, branched 

 above, Ivs lanceolate, 2' long, the floral 

 ovate, acute. 3-ti" long; infl spicate, 

 commonly elongated; pet about 2" long, 

 about twice as long- as the lobes of tho 

 ex, ana exceeding the subtending IVB; 

 cap j-" lon, ueaiscent; sds ovate or tri- 

 angular ovate. 



Jepson, Erythea 1:14. 



Ha U 96. Hanson's; San Diego; Wash. 

 BOISDUVALIA CLEISTOGAMA Cur. 



With stout rigid W branches or rare- 

 ly simple, 4-8' hi, pilose-pubescent, 

 somewhat glandular, glaucescent; Ivs 

 linear or lanceolate, 1-1 7^' long, remote- 

 ly denticulate; fls axy along- the 

 branches, the earliest fertilized in the 

 bad and never expanding, the later light 

 pink; pet 2" long, birid; cap 4-sided, the 

 6-eptal lines on each side distinct, sharp- 

 ly pointed 5" long, hard coriaceous, 

 Very tardily dehiscent, if ever. Elmira, 



ClU* 



< -Tvid^on, PI LA Co 6. 



feoxsaxnrA&ZA. CZJASSIAA v/a!p. 



Abrams, Fl LA J65. 



Com much-branched, the branches de- 

 euni'.'ent or ascending, blmsh-g, dense'.v 

 ''Ions to glabrous; Ivs ab^ut l'> 

 him long or more, ovaU-lancajlate. 

 acute, serrulate, the i:pper si.-ni'.ar: (Is =n 

 a term:r?-l cluster and a few shorter 

 lateral splices, also occasionally in the 



834 



lower axils, shorter than th* Subtend- 

 ing Ivs; pet about 2 mm long, violet; 

 cap rather slender, nearly straight, com 

 acute, about 7 mm long, subterete, with 

 4 broad nerves or laterally somewhat 2- 

 keeled, loculicidal; sds about 6 in each 

 cell, subfusiform, about .35 mm broad, 

 1 mm long. 



Monica, SD (Cleveland). 



Genus GAYOPHYTtTM Juss. 



Erect very slender diffusely branch* 

 ing an. With alt linear entire Ivs and 

 and as broad, more or less hirsute- 

 axy w or p'ish fls: ex-tube not prolonged 

 above the ova, the 4-parted deciduous 

 limb reflexed: pet 4: sta 8, the alt ones 

 usually minute and sterile; fil filiform; 

 anth subglobose. fixed near the middle: 

 ova oblong or linear, compressed, 2- 

 celled; stig capitate or clavate: cap 

 membranous, ciavate, 4-valved; sds few" 

 to num, in 1 row in <aach cell, smooth, 

 naked, mostly oblong. 

 G AYCPHYTUM BAMOSISSlMTJM T & G 



St intricately dichotomous with fili- 

 form branches 15-60 dm hi, glabrous be- 

 low, appressed canescent above or rare- 

 ly with spreading hairs throughout; Ivs 

 mostly narrow, usually appressed 

 against the branches; pet nearly w, 

 turning 1 rose p, 1-2 mm long: stig about 

 4 mm in diam; cap about 1 mm thick, 

 oblong to subclavate, often torulose, 

 erect or refracted on filiform pedicels; 

 sds nearly erect in a single sr, papillate, 

 ,5 mm broad, 1.8 mm long. Common 

 with pines on the mt^. 



Treleasa, Mo bot gard r 5:111 t 20. 



Hail. U 97. 



Abrams, Fl LA 272. 



Genus ErLOBVS Nuttall. 

 A smooth er^ct an With ait Ivs and 

 rriddle-sized fis; sessile along the vir- 

 g-ate branches: ex-tube scarcely at all 

 produced beyond the ova, the limb 4- 

 parttHi, rsflexeti: pet 4, rhombic-ovate, 

 ^e-^ile, pne y turning r'ish: sta S; anth 

 oblong, attached rear th middle: ova 

 4-ce"ed: stig capitate: cap lino^r. elon- 

 gate.!, 4-an^-itd, 1- valved , lmprfctiy 

 i-ceiied, reiiexed: sds num, ovate-ob- 

 long, naked. 



fct?juCBi?s CAZiiroairicus Nuttaii. 



Torr & Gray, Fl 1:515. 



St 3-10 dm hi, rather stout, simple 

 or with a few spreading virgate 

 branches: Ivs linear, 2.5-5 cm long, sinu- 

 ate 1 ?' pirmatifid, with num unequal di- 

 varicate acute teeth; ex-tube prolonged 

 less than 1 rnin above the ova; pat 8-10 

 mm long, pale y or nearly w; cap 6-10 

 mm long; sas 3-ang!ed. SBar; Baja! Ar. 



Abrams, Fl LA 2G^. 



Parish, Erythea 6:S3. 



Greene. Pittonia 1:302, as Cenothera 

 leptocarpa. 



Genus JUSSIAEA Linnaeus. 



Glabrous per herbs: Ivs ait: fls y. sol- 

 itary in the ax!]^, podice^ed: Cx-tub6 

 elongated, not produced beyond the ova, 

 its lobes 5: pet 5: sta twice as many: 

 sis nvn. 

 JL' F?IAA REPENS T..lrn. 



MticL Erytiifea 1:61. "Continental 

 Inr;ii only; p^?; M r ." 



iJavidson, Fl LA Co 6. 



