IlYDROrilYLLACK.E. (WATIiULKAF TAMILV.) 3G9 



2. E. ambigua, Xutt. Later peduncles sometimes 2- S-flowcred; corolla 

 ratlicr more bcll-shnpcd, tlic upper jiart of tube 5-angular : otherwise like the 

 prcuedinjj;, of which it is ])rohably a variety. — Illinois and westward. 



4. PHACELIA, Juss. (Phacelia & Eutoca, 7?. 5/-.) 



Calyx 5-partcd ; the sinuses naked. Corolla open bcll-shapcd, 5-lobcd ; the 

 lobes imbricated in the bud. Filaments slender, often (with the 2-cleft style) 

 cxserted : anthers ovoid or oblong. Ovary witli 2 narrow linear placenta2 ad- 

 herent to the walls, in fruit usually projecting inwards more or less, the two 

 often ibrniing an imperfect partition in the ovoid 4 - many-seeded pod. (Ovules 

 2 - 30 on each placenta.) — Perennial or mostly annual herbs, with either simple, 

 lobed, or divided leaves, and commonly handsome (blue, purple, or white) flow- 

 ers iu one-sided raceme-like clusters. (Name from (fiuKeXos, a fascicle.) 



§ 1. PHACELIA. Seeds and ovules oiili/ 4 (two on each plaanta) : corolla with 

 narrow folds, appendaries, or scales within, the lobes entire. 



1. P. bipinnatiflda, Michx. Biennial; stem upright, much branched, 

 hairy (l°-2° liigh) ; leaves long-petioled, pinnately 3-5-divided ; the divisions 

 or leaflets ovate or oblong-ovate, acute, coarsely and often sparingly cut-lobed 

 orpinnatifid; racemes elongated, loosely many-flowered, glandular-pubescent; 

 pedicels about the length of the calyx, spreading or recurved. — Shaded banks, 

 in rich soil, Ohio to Illinois and southward. May, June. — Corolla bright blue, 

 6" broad, with 5 pairs of longitudinal folds, covering as many externally keeled 

 deep grooves. Stamens bearded below; these, with the style, are either some- 

 what included (P. brevistylis, Buckhy) or cxserted in different individuals. 



§2. COSMANTHUS. (Cosmanthus, AW/e. Sect. Eucosmanthns, ^. DC, 

 in part.) Seeds and ovules onlij A: corolla naked within ; its lobes beaulifulhj 

 fringe-toothed: filaments villous-hearded below : leaves pinnatifid, the upper clasp- 

 ing at the base : flowers long-pedicelled : annuals or spring biennials. 



2. P. Purshii, Buckley. Sparsely hairy ; stem erect or ascending, branched 

 (8'-12' hi.i;h) ; Ivhcs of the stem-leaves 5 - 9, oblong or lanceolate, ariite ; raceme many- 

 flowered ; cali/x-lobes lance-linear ; corolla light blue, varying to white (about ^' in 



diameter). (P. fimbriata, Pursh., not of Michx. Cosmanthus fimbriatus, 

 Nulte, ij-c.) —Moist wooded banks, W. Pennsylvania to Illinois and southward. 

 April- June. 



3. P. fimbriata, Michx. Slightly hairy, slender; stems spreading or as- 

 cending (5' -8' long), few-leaved; lowest leaves 3-5-divided into roundish leaf- 

 lets ; the upper 5 - 7-cleft or cut-toothed, the lobes obtuse ; raceme 3 - \0-flou-ered ; 

 cali/x-lobes liiicar-oblong, obtitse, becoming spatulate ; corolla white (3' -4" broad). 

 — Woods, high mountains of Virginia, and southward. May. 



§ 3. EUTOCA. (Eutoca, R. Br.) Seeds (or at least the ovule.<!) several or many, 

 rarely only 3 or 4 on each jihtcinta : corolla usually with small and inconspicuous 

 folds or (ippcndiign^ ivithin, its lobes entire. (Ours are annuals or biennials.) 



4. P. parviflora, Pursh. Somcwh;it hairy, slender, diffusely spreading 

 (3' -8' high) ; leaves pinnately cleft or the lower divided into 3-7 short lobes ; 

 racemes solitary, loosely f> - lb-flowered ; pedicels filiform, at length several times 



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