BOTANY OF SOUTHERN CALIFORNIA 



By Charles Russell Orcutt. 



San Diego, California. 



FLOWERING PLANTS. 



Phsenogamous plants, bearing true fl (having 

 stamens and pistils), and producing seeds which 

 contain an embryo. 



Class I.— Dicotyledons. 



Exogenous plants. Stems consisting of a pith 

 in the center, of hark on the outside, and these 

 separated by one or more layers of fibrous or 

 woody tissue, which, when the stem lives from 

 year to year, increases by iheaddiiion of new 

 jayersto the outside next to the bark. Embryo 

 usually with 2 opposite cotyledons, or rarely 

 with several in a whorl. 



Subclass I.- Angiospermje. 



Pistil consisting of a closed ovary which con- 

 tains the ovuk'sand forms the fr ; cotyledons 2. 



Division i.— Polypetalje. 

 Petals distinct, or nearly so (.sometimes absent). 



BANTJNCULACEAE. 



Crowfoot family, herbs or woody vines with 

 colorless usually anid juice, polypetalus, or 

 apetalus with the sepals often colored and peta- 

 joid; sepal?, petals, stamens a- pistils all distinct; 

 short: seed anatropous, embryo minute in firm 

 fleshy a bumen: stipules none. 



Genus CLEMATIS Limiui'ti*. 



Virgin's Bovver: sepals petaioid, colored, val- 

 a ate in the bud ; pistils numerous; akenes many 

 in a head ; leaves opposite. 



g.— Petals 0; sepals a, styles becoming long 

 feathery awns in fr. 

 CLEMATIS LlGUSTICl FOLIA Nutt»ll. 



Nearly glabrous, stems sometimes 30 ft. long, 

 leaves 5-foliale, leaflets broadly ovate to lanceo- 

 late, l'/4- ; 5 inches long, acute or acuminate, 3- 

 obed <s roarsely toothed, rarely entire or 3 part 

 ed, II dioecious, paniculate, sepals thin, silky, w, 



4-6 lines long; akenes pubescent, tails 1-2 inches 

 long, o-m n j Abundant along water courses 

 in the foothills and mt up to 600C ft. he 52. da 1 

 V. CALIFORNICA Wat. 



Leaves silky-tomentose beneath, often small^ 

 z s— the Sacramento, he 52 



CLEMATIS LASIANTHA Nutt. 



bilky-tomentose. stems stout, elongated; fl di- 

 oecious, solitary, on rather stout 1-2-bi acted ped- 

 " uncles; sepals obtuse, thickish. G-10 lines long; 

 akenes pubescent. b— Plumas Co. 

 CLEMATIS PAUCIFLORA Nuttall. 



Silky-pubescent; stem rather slender, short- 

 jointed; leaves short & fascicled; leaflets 3-5, only 

 3-9 lines long, euneate-obovate to cordate, most- 

 ly 3-toothed or 4-lobed; fl solitary or few & pani- 

 cled, on slender pedicels: sepals thin, 4-6 lines 

 long: akenes glabrous. sj he52 



Genus THALICTRUM Tournefort. 



Meadow rue: sepals 4-7, greenish or petaioid: 

 imbricated in the bud, petals 0, akenes 4-15 in a 

 head, tipped by the stigma or short style, groved, 

 ribbed, 01 inflated; ovule suspended; fi in co- 

 rymbs or panicles; leaves alternate, 2-3-ternately 

 compound; leaflets stalked. ^ 

 §l.-fl dioecious; anthers linear, acuteor acumi- 

 nate. 



THALICTRUM POLYCARPUM S. Wat. 

 Pat her stout, 2-3 ft high, glabrous: leaves 

 with short petioles or the upper sessile; leaflets 

 varhble, x A-\ inch long; lobes acutish to acumi- 

 nata: panicle narrow, often small, the staminate 

 usually orowdel on short pedicels: anthers 

 acute, on very -slender filaments: fr in dense 

 heads, compressed, broadly oblong-obovatp, or 

 obovate, abruptly acute, 2^-3 lines long: seed 

 linear, terete, nearly 3^ inch long, j-o he 54 dal 



