H3 



California Art & Nature. 



144 



V micromera Mi^sp. Or e 

 EUPHORBIA SERPYLLIFOLIA Pers. 



"Glabrous^ prostrate or ascending, dl- 

 (h.t^mously branching; stems terete, or 

 mcT2 or less angled (in the type almost 

 ■Ringed); stipules setaceous or lacerate^ 

 triangular at the base; leaves short pet- 

 ioled, oblique ai the base, blade varying 

 from sratulate to cblcng cr obovati.-, apex 

 truncate or retuse and more or less cren- 

 ulate serrate. In'^orescence solitary' or in 

 loose 'eafy c.usters: involucres campanu- 

 la'e, the lobes triangular subulate; ylanis 

 transverse oblong, more or less cupped in 

 1h^ cfnra; ai pe d ges nrr.w, 3-4- 

 crenate lobed or nearly entire; svigmas 

 short, bitid. Ca^s' les srr.ooth, carpels 

 oprlnate; seeds sharply quadrangular, 

 sligh'ly 'o man festly rugose tetveen the 

 angles, the rugae s^me'imes so obtuse as 

 to make the- surface appear shallow pit- 

 tcfl."— Millspaugh, Pittonla, 2:83. 



Co'orac'o. Oregon, California, -A r zona. 

 Varey CONSANGIINFA Eols?. 



Differs from t'e s-ecies in having a 

 more erect growth; an ct) use sharply ser- 

 rate apex to t^e leaves; lacerate lobes to 

 the involvcr s; darker nnd more ovate 

 reeds jes5 ; harp on the angles; and more 

 cr less red coloration in the stems and 

 leavet'."— MillT.augh, Pitton'a 2:S4. 



Northern Lov,-er California (Orcutt); 

 Washngton (Sukrdorf); Idaho (Greene); 

 .^^?nsas (J. ^. yZo"in). 

 Vprie'y RUGUL03A Engelmann. 



"D fCers 1 rncipally in its thickly mat- 

 ted gro-ivth; the prolongation of the teeth 

 dcv.-n the lor.-srr-r side of the leaf; and the 

 t'-rg;d very finely rugulose seeds. The 

 t' pe from San Bernardino. Calif., S. b. 

 .''■ V7. F. Parish. 18Sl."^Millspaugh, Pitt- 

 or:ia 2:8.5. 

 Va'ie'y NEO-ME.KTCANA Millsp. 



"Erect, glabrous, with acutely angled 

 h-a-che?. Differs from the spe-^ies and 

 vpr. rorsanguirea, c''e'!y in its e'ongated 

 sVarply poin*ei seeds, having the 2 ven- 

 'ral facets concave, and the involucral 

 k)'eD rntirp or 2-3 cleft."— Millspaugh, 

 Pittcria 2:84. 



Tyre locality:— plains of the upper Gila 

 riT'^r, N. M. 



Euphoibla neo-mexicana Greene, Cal ac 

 h 2:i'. 



E loiiei(rn-'s Sehecle. Or 



E peD"o:des Nutt Or 



Edi-tyosperma F-M Or 

 E O' t tiiM.x Or 

 E he' rophyllagraminifolia E Or 

 E 1 nja-ralifornira Milsp, Orj 1381 

 Esotil ba E Or 

 K wri-hfi T-f} Or 

 EUPHORBIA SPT.ENDENS Boj. 

 EUPHORBIA TOMENTULOSA S. Wat. 



Genus EREMOCARPLS Benthnm. 

 EREMOCARPUS SETIGERUS Benth. 



Genus ACALTPHA Linnaeus. 

 ACALYPHA CALIFORNICA Benth. 



Genus CROTOX Llnnaens. 

 CIIOTON CALIFORNICUS Mull. 



CROTON TENUIS S. Watson. 

 BERNARDIA MTRICAEFODIA S. Wat. 

 Genus STILLIXGIA Garden. 



STILLINGIA ANNUA Mull. 

 STILLINGIA LINEARIFOLIA S. Wat. 



Genus ARGYTHAMXIA P. Browne. 



ARGYTHAMNIA SERICOPHYLLA A. G. 

 ARGYTHAMNIA SERRATA Mull. 



Genns TETRACOCCUS Engelmann. 



TETRACOCCUS DIOICUS Parry. 



"Shrubby, dioe^iu'^; staniinate floweis invohi- 

 crate on slender pt'dice's in the axils of the up- 

 pur leaves of recent shoots; inflorescense with a 

 prol'inged central axis a Utile shorter than the 

 leavea, and usually '2 or more unequa.ly deve!- 

 o; ed opposite br nches, b acteate at base; Invo- 

 lucre in a double series, persistent, with 7-9 

 shot, rounded segments; stamens 7-9 long ex- 

 ^e^t,i^lse^ledat the base of the involucral scales, 

 encircling an irregularly lobed, central disk; 

 liliiments densely ciliate-pubescent at has ■, an- 

 thers extrorse, broadly 2 celled. Pistillate flow- 

 ers in theaxilsof lower leaves on recent shoots 

 single pedicellate, pedicels thickening np- 

 wards, and bibracteate near the middle invo- 

 lU' re 01 7-9 oblong, unequal segments in 2 ser- 

 ies with 4 i-'landular scales on the inner surface, 

 segments fragile at maturity. Uvary 4 lobed, 



densely tiwny hisjij, \vi h 4 long, recurved 

 s igmas. Capsule orbicular, broadly 4 obed 

 and 4 celled, the thin epicarp separating in 

 valves from rigid cocci which part at maturity, 

 the separate cells dehiscing at both sutures. 

 (Mules 2 to eai'h cell pendant from the upper 

 plhcental column which persists as a rigid cen- 

 tral axis after the rupt ire of the cells. Seeds 

 bj' abortion 1 to each cell, smooth, oblong, con- 

 spicuously caruncuUte. Embryo with broad 

 cotyledons and short, straight radicle immersed 

 in copiousalbtiinen. leaves narrowly lanceo- 

 late, nea'ly sessile with a somewhat decuTent 

 luidril), smooth, rather rigid and inclined to 

 curve on the uppe'' face, mostly opposite or in 

 ternate whoiles, often fa£cic\ilate in the lower 

 axils, and with short reduced branches on the 

 lower ^hoots."— Parry, West Am Sci. 1,13. 1885. 



RICINIS COMMUNIS Linn. 



CALLITRICHACEAE. 



Genus CAIiLITRICHE Linnaeus. 



OALLITRICHE LONGIPEDUNCULATA 

 "With thread-like stems; leaves all 

 spatulate or oblanceolate, 3-8 mm long, 

 the blades 1-2 mm broad, rounded at the 

 apex, and sloping into narrowly margined 

 petioles often longer than themselves, 

 dotted with stellate scales, S-nerved, the 

 lateral nerves running into each other 

 very near the apical margin. Perigonial 

 sacs longer than the fruit. Styles much, 

 longer than the fruit, erect, deciduous. 

 Peduncles lengthening to 10-25 cm at ma- 

 turity, and frequently 2 or 3 proceeding 

 from the same axil, or a little below it. 

 Fruit thick, nearly orbicular, three-fifths 

 to 1 mm long by about four-fifths mm in 

 breadth, minutely emarglnate, the lobes 

 divergent, with a deep intervening groove, 

 obtusely margined, and with or without a 

 very narrow wing."— Morong, Torrey bot 

 cl b 18:236. 



