396 COMPOSITE. Callichroa. 



§2. Receptacle chaffy throughout ; the chaff membranaceous, short: acheniaoj 

 the disk oblong-cuneiform : awns of the pappus {about 12) subulate, very un- 

 equal. — Calliglossa, Hook. & Arn. 



2. C. Douglasii : stem glabrous below, loosely branched and pubescent 

 above; leaves scabrous-ciliate ; the lower pinnatifid, with the linear seg- 

 ments entire or sparingly incised ; the uppermost linear-lanceolate, entire ; 

 scales of the involucre hispid on the back with short and stout bristles ; achenia 

 of the disk silky-villous ; tlie corolla glabrous. — Calliglossa Douglasii, Hook. 

 Sf Arn. ! bot. Beechey, suppl. p. 356. Oxyura chrysanthemoides, Lindl. ! 

 bot. reg. t. 1850 (as to the figure) ; Fisch. Sf Meyer, 3rd ind. I.e. 1837, Sf 

 in Linntea, 12. suppl. p. 102 ; Schauer, del. sem. Vralisl. 1837, p. 3, Sf in 

 Linmea, I. c. p. 89 ; not of DC. 



California, Douglas, (v. sp. cult.) — Plant very much resembling Oxyura 

 chrysanthemoides in aspect, but with narrower and less compressed villous 

 achenia. Awns of the pappus rigid and dilated at the base ; 3 or 4 of the longer 

 equal in length to the achenia. Rays whitish at the tips. 



136. OXYURA. DC. in Lindl. nat. syst., S^prodr. 5. p. 693. 



Tollatia, Endl. — Oxyura, Lindl. bot. reg. as to descr. only. 



Heads many-flowered ; the ray-flowers 10-12, ligulate, coarsely 2-3-toothed 

 at the apex, pistillate ; those of the disk tubular, perfect ; many of the cen- 

 tral infertile. Scales of the involucre in a single series, hispid-ciliate, con- 

 volute at the base and enclosing the ray achenia, abruptly narrowed above 

 into a linear foliaceous and spreading appendage. Receptacle flat, chaffy 

 throughout ; the chafT oval-oblong, membranous, ciliate, with acute herba- 

 ceous or colored hairy tips. Corolla with a hairy tube ; the infundibuliform 

 limb in the disk-flowers deeply 5-toothed. Branches of the style in the disk- 

 flowers long and linear, very acute, hispid, exserted and revolute. Achenia 

 of the ray and disk similar, glabrous, obovate, obcompressed (with a very 

 small epigynous disk), entirely destitute of pappus; the central often abor- 

 tive. — An annual erect nearly glabrous herb, with the habit of Chrysanthe- 

 mum segetum ; the branches pubescent at the summit, and terminated by 

 rather large heads. Leaves alternate, pinnatifid ; the lobes 4-8 pairs, oblong- 

 linear, entire, short, scabrous-ciliate. Flowers yellow : the anthers blackish. 



O. chrysanthemoides (DC. ! 1. c.) — Hook. S^' Arn. ! bot. Beechey, suppl. p. 

 356 ; not of Bot. reg., Fisch. c^ Meyer, Schauer, S^-c. 



California, Douglas! — Tube of the corolla somewhat dilated at the base, 

 and embracing the apex of the short and flat achenia. — This plant, we be- 

 lieve, has never been cultivated. In the Mantissa Compos. {7. p. 294), De 

 CandoUe has incautiously adduced the syn. of Lindl. bot. reg., Fisch. Sf 

 Meyer, Sfc. ; which belongs to Callichroa (Calliglossa) Douglasii. 



137. HEMIZONIA. DC. prodr. 5. p. 692. 



Hemizonia & Hartmannia, J9C. 



Heads several-many-flowered ; the ray-flowers 5-20, ligulate, 2-3-lobed, 

 pistillate ; those of the disk tubular, perfect, but infertile. Scales of the in- 



