228 UMBELLIFERAE 



1. Daucus pusillus Michx. Rattlesnake Weed. Fig. 3493. 



Daucus pusillus Michx. Fl. Bor. Amer. 1: 164. 1803. 



Plants annual from long slender more or less fibrous branching roots. Leaves finely dissected 

 into linear divisions 1-5 mm. long ; bracts equaling to exceeding the rays, pinnately divided into 

 short linear or lanceolate segments; bractlets linear, about equaling the pedicels; rays 0.4-4 cm 

 long; flowers white; fruit oblong, 3-5 mm. long. 



Open hillsides and valleys, Upper Sonoran and Transition Zones; Vancouver Island to Lower California 

 east to North and South Carolina. Type locality: "in campestribus Carolinae." April-June. 



2. Daucus Carota L. Wild Carrot or Queen Anne's Lace. Fig. 3494. 



Daucus Carota L. Sp. PI. 242. 1753. 



Plants biennial from slender fusiform taproots. Leaves finely dissected into linear or lanceo- 

 late segments 2-12 mm. long; bracts shorter than the rays, pinnately divided into elongated 

 filiform divisions; bractlets linear, equaling to exceeding the pedicels; rays 3-7.5 cm. long; 

 flowers white, yellow or pinkish, the central flower of the umbel purple or pink; fruit ovoid, 

 3-4 mm. long. 



Introduced from Europe and well established in western Washington and Oregon, less so in California. 

 May-Sept. 



13. CORIANDRUM [Tourn.] L. Sp. PI. 256. 1753. 



Annual herbs with pinnately decompound leaves. Flow^ers white or roseate in com- 

 pound umbels. Involucre wanting. Involucels of a few narrow bractlets. Fruit subglobose, 

 hard, not constricted at the commissure, the ribs slender. Stylopodium conical; styles 

 slender. Oil-tubes obscure. [The ancient Latin name.] 



A genus of 2 species of the warm temperate and subtropical regions of the Old World. Type species, 

 Coriandrum sativum L. 



1. Coriandrum sativum L. Coriander. Fig. 3495. 



Coriandrum sativum L. Sp. PI. 256. 1753. 



Glabrous annual 2-7 dm. high. Lower leaves ternately or pinnately divided, the segments 

 ovate or obovate, toothed or cleft; upper leaves decompound with narrowly linear divisions; 

 umbels 3-5 cm. broad; rays slender; pedicels 2-5 mm. long; involucre none; involucels with 

 small linear-lanceolate bractlets ; fruit subglobose, 1 . 5-5 mm. long, the ribs narrow, acute. 



A garden plant, occasionally escaped from cultivation. Native of southern Europe. May-July. 



14. ApIUM L. Sp. PI. 264. 1753. 



Glabrous annual, biennial or perennial herbs with pinnate to ternate-pinnately decom- 

 pound leaves. Flowers white or greenish yellow, in compound umbels. Sepals obsolete. 

 Stylopodium depressed or low-conical. Fruit ovoid to ellipsoid, laterally compressed, 

 smooth or tuberculate. Carpels usually with prominent ribs and somewhat _5-angled; 

 oil-tubes generally solitary in the intervals, 2 on the commissural side. [The ancient Latin 

 name.] 



A genus principally of Eurasia and the southern hemisphere, of some 30 species. Type species, Apium 

 graveolens L. 



Plants annual: leaves pinnately or ternate-pinnately decompound, divisions linear to filiform. , ^^ ^, „ 



1. A. leptopnyllum. 



Plants perennial; leaves pinnate, divisions ovate to suborbicular or cuneate. 2. A. graveolens. 



1. Apium leptophyllum (Pers.) F. Muell. Marsh-parsley. Fig. 3496. 



Sison Ammi Jacq. Hort. Vindob. 2: 95. pi. 200. 1773. Not S. Ammi L. 1753. 

 Pimpinella leptophylla Pers. Syn. PI. 1: 324. 1805. 



Apium leptophyllum F. Muell. ex Benth. & Muell. Fl. Austr. 3: 372. 1866. 

 Apium Ammi Urb. ex Mart. Fl. Bras. W^: 341. 1879. Not A. Ammi Crantz. 1767. 



Stems prostrate to suberect, 0.5-6 dm. high, branching. Basal leaves 3-4-pinnately decom- 

 pound 3 5-8 cm. broad, petiolate, the upper smaller, ternate-pinnately decompound, short-petio- 

 late- leaf-divisions linear to filiform, 4-35 mm. long; umbels opposite the leaves or termmal, 

 3-5-rayed; bracts and bractlets wanting; pedicels 2-8 mm. long; flowers mmute, white; fruit 

 ovoid, 1.2-3 mm. long. 



Humboldt County, California, probably introduced; widespread in southeastern United States. West Indies 

 and South America; also in Europe and Asia. Type locality: Santo Domingo, West Indies. 



2. Apium graveolens L. Celery or Smallage. Fig. 3497. 



Apium graveolens L. Sp. PI. 264. 1753. 



Stems erect, 5-15 dm. high, branching. Basal leaves pinnate, 1-6 dm. long, petiolate, the 

 upper much reduced, pinnate, nearly sessile; leaf-divisions 3-5, sessile or petiolulate, 2-4.5 cm. 

 long, broadly ovate to oval or cuneate, coarsely toothed and incised ; umbels opposite the leaves 



