1. Ammoseliniini Biitleri (Wats.) Coult. & Rose. Fig. 578. 



Annual from slender taproot, plant branching from the base, 4-5 (-12) cm. 

 high; leaves oblong, to 25 mm. long and 15 mm. wide, biternate or ternate-pinnate, 

 ultimate divisions of leaves linear, obtuse, mucronulate, glabrous; inflorescence 

 of compound umbels, umbels sessile in the axils; involucre lacking; involucel of a 

 few foliaceous bractlets, shorter than the pedicels; rays 2 to 6, unequal, to 2 cm. 

 long to obsolete; pedicels 1 to 10, unequal, 1-6 mm. long; flowers white, the calyx 

 teeth obsolete, the stylopodium low conic; carpophore 2-cleft at the apex; fruit 

 ovoid, compressed laterally, 2.5-3 mm. long, 1-1.5 mm. broad, glabrous to sparsely 

 roughened with callous teeth, the subacute ribs prominent, the lateral ribs of the 

 two mericarps closely contiguous and appearing to form a single broad rib; oil 

 tubes solitary in the intervals and 2 on the commissure, the seed face plane or 

 nearly so. 



Principally in bottomlands and moist or wet woodlands along rivers in s.e. Okla. 

 (Waterfall) and in Tex. in the Timber Belt and the Blackland and Coastal prairies. 

 Mar. -Apr.; also Ark. 



6. Cryptotaenia DC. Honewort. Wild Chervil 

 A chiefly circumboreal genus of about 6 species. 



1. Cryptotaenia canadensis (L.) DC. 



Plant slender, erect, caulescent, branching, glabrous, herbaceous, perennial from 

 slender fascicled roots, 3-9 dm. high; leaves ternate, oblong-ovate, to 13 cm. long 

 and 15 chi. wide; leaflets oblong-lanceolate to obovate, to 13 cm. long and 8 cm. 

 wide, short-acuminate at the apex, cuneate at the base, closely and doubly serrate 

 or occasionally deeply 2- or 3-lobed; upper cauline leaves reduced to lanceolate 

 dentate bracts; inflorescence of compound umbels, the peduncles terminal and 

 lateral, usually paniculate; involucre and involucel lacking or of few inconspicuous 

 bracts or bractlets; rays 2 to 7, unequal, ascending, 1-6 cm. long, the 2 to 10 

 unequal pedicels ascending and to 35 mm. long; flowers white, the calyx teeth 

 obsolete or minute, the styles erect or reflexed, the stylopodium slender-conic; 

 carpophore divided to the base; fruit linear-oblong, compressed laterally, 3.5-8 mm. 

 long, 1.5-3 mm. broad, glabrous, the filiform obtuse ribs subequal and conspicuous; 

 oil tubes 1 to 4 in the intervals and 2 on the commissure, the seed face plane. 

 Deringia canadensis (L.) O. Ktze. 



In moist woodland and in wet mud at edge of stream in woods in Okla. (Murray 

 and Adair cos.) and in Tex. in the Timber Belt., May; from e. Can., s. to Ga., w. 

 to Man., Neb. and Tex.; also Japan and s. China. 



7. Osmorhiza Raf. Sweet Cicely 



A genus of 1 1 species of East Asia and eastern North America, and of western 

 North America to South America. 



1. Osmorhiza longistylis (Torr.) DC. Anise-root. Fig. 579. 



Plant rather stout, 6-10 dm. high, villous or hirsutulous; leaves orbicular, 8-25 

 cm. long, biternate or ternate-pinnate; leaflets ovate to oblong-lanceolate, acute, 

 coarsely serrate, incised or pinnately lobed toward the base, hirsutulous especially 

 on the veins and margins; peduncles 5-13 cm. long; involucre of 1 to several 

 linear or lanceolate foliaceous, ciliate, sharply reflexed bracts to 15 mm. long; rays 

 3 to 6, spreading-ascending, 1.5-5 cm. long; pedicels spreading-ascending, 5-8 mm. 

 long, flowers white, the stylopodium high-conic; carpophore cleft about one third 

 of its length; fruit oblong-fusiform, 15-20 mm. long, acute at the apex, caudate at 

 the base, the appendages 4-6 mm. long, sparingly bristly on the ribs. 



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