CHICORY FAMILY 1019 



2. N. californica (Nutt.) Greene. Stem glabrous, 5-10 dm. high, panicu- 



runcmate 



ligul 



acuminate 



1^-10 mm. long; iigules white; beak of the achenes slender. R. californica Nutt. 

 Moist ground: CaM.— s Utah— Ariz. L. Son. Ap-Je. 



5. TRAGOPOGON (Tourn.) L. Salsify, Oyster Plant. 



Tall perennial herbs, with fleshy taproots and long alternate grass-Uke leaves 

 clasping at the base. Involucres nearly cylindric; bracts in a single series, united 

 at the base. Flowers many, yellow or purplish: Ugules truncate and 5-toothed 

 at the apex. Achenes muricate, 5-10-ribbed, produced at the apex into a dis- 

 tinct beak. Pappus of plumose bristles connate, at the base. 



Plowers yellow. ^ 



Bracts 8-9; flowers chrome yellow; involucral bracts equalling or shorter than the 



nowers. ^ XT vralensis 



Bracts 10-13. rarely less; flowers lemon yellow; involucres longer than the flowers. 



Flowers purple; involucral bracts much longer than the flowers. 3*. T. porrifolius. 



1. T, pratensis L. Stem 3-6 dm. high, glabrous; leaves linear-lanceolate, 



long-attenuate; peduncles scarcely fistulose, little if at all thickened below the 



heads; bracts Imear-lanceolate, attenuate, 2.5-3 cm. long; outer achenes muricate. 



fields and waste places: N.B.—N.J.— Utah— Mont.— Man.: adv. or nat. from 

 -cjU. Je-Au. 



2. T. dubius Scop. Stem 5-10 dm. high, glabrous; leaves clasping, lanceo- 

 late, attenuate; peduncles fistulose, gradually thickening upwards; bracts green, 

 Imear-lanceolate; achenes strongly tuberculate. Waste places: Colo.; escaped 

 from cultivation. 



3. T. porrifolius L. Stem 6-10 dm. high, glabrous; leaves clasping, with 

 lanceolate bases, long-attenuate; peduncles distinctly fistulose, gradually thick- 

 ened below the head; bracts 8-10, linear-lanceolate, long-attenuate, 3-5 cm. 

 long; outermost achenes strongly muricate. Fields and waste places: Ont.— N.C 

 — N.M.— Utah; Calif.— B.C.; escaped from cultivation. Je-Au. 



vK ^' <*^^iusX porrifolius. CoroUa very pale purpUsh; involucral bracts 9-13. With 

 tne parents. Colo. 



T. porrifolius X pratensis. Corolla pale lilac; involucral bracts 8-10. mostly 8. With 

 the parents. Ont.— N. J.— Colo.— Mont. 



6. HYPOCHAERIS L. Cat sear, Gosmore. 



Subscapose annuals or perennials. Leaves mostly in basal clusters or rosettes, 

 often lyrate. Involucres campanulate; bracts rather few, but imbricate and the 

 outer successively shorter. Receptacle chaffy; paleae thin and narrow. Flow- 

 ers yellow. Achenes fusiform or oblong, lO-ribbed, tapering at the top into a 

 more or less distinct beak. Pappus of capillary plumose bristles, or some of the 

 outer bristles shorter and not plumose. 



1. H. radiata L. Perennial; stem 5-20 dm. high, corj-mbosely branched, 

 ahnost leafless; basal leaves lyrate-i)innatifid, with the lateral lobes oblong, ob- 

 tuse, hirsute; involucre about 25 mm. high; Ugules 7-10 mm. long. Waste places 

 and fields: N.Y.— N.J.— Colo.; Calif.— B.C.; adv. or nat. from Eurasia. My-0. 



7. ADOPOGON Neck. 



Perennial herbs with pale green foliage. Leaves mainly basal. Livolucre 

 campanulate; bracts in 1 or 2 subequal series, without cal 

 naked. Flowers yellow. Achenes oblong or somewhat turl 



beakless. Pappus of 10-15 outer short squamellae and ] 



bristles. 



culum. Receptacle 



15-20-ribbed. 



1. A, virginicus (L.) Kuntze. Stem glabrous, 3-6 dm. high, 1-or 2-leaved, 

 branched above; basal leaves spatulate, wing-pctioled, runcinately lobed, toothed, 

 ^J^i^tire, 5-10 cm. long; cauhne leaves partly clasping, with a broad base; bracts 

 10-15, hnear-lanceolate, acutish, glabrous, S-10 mm. long; flowers orange 



