ADDITIONS AND CORRECTIONS TO V(JL. II. 



481 



35. E. parvifolium, Smith. Los Augeles, Mrs. A. E. Bush. 



36. E. fasciculatum, Benth. So common in some portions of Southern Cali- 

 fornia as to bci known as " Uee-feed " or " Wihl Jiuckwheat." 



Page 33. 7. CHORIZANTHE. 



Bentham & Hooker (Gen. PL iii. 93) .still retain the <,'eniis Ccnlrostcqia as .listinet from Chori- 

 zanthc, characterizing it by the 2 - 4-llovvered 3-G-toothe(l divaricately spiirrcd involucre, tyiiical 

 Chorizantke having a 6-toothed spiuiess involucre and flowers always solitary. Both 'sections 

 Ahicronea and Acanf.hogonmii, however, as recognized by them, deviate as mudi or more in the 

 number of in volucral teeth. A Chilian species of true Chorizaiillie (r. mm uilsnitrulis. Gay) repre- 

 sented in herb. Gray by specimens from Gay, has the involu.ic r,,iis|,irii,,nsly and nearly or riiiite 

 constantly spurred at base with divaricate si^ines, and a gibbous dilatimi at liase is not rare in our 

 own species. The only remaining character is invalidated by tlie fact that of the two species of 

 Clwrizantlie only one has with apparent uniformity more than" one flower (2 or 3), while the other 

 has rarely more than one. Considering the accepted heterogeneous character of the genus CJwri- 

 zanlhe it seems more reasonable and satisfactory to unite Ccnlrostegia also with it, than to rest it 

 upon characters none of which are constantly distinctive. 



Insert in Key to Species, after 17. C. Paiuiyi : — 



Leaves narrowly oblanceolate, not tomentose : awns of involucre 



straight: corolla-lobes nearly equal, broadly oblong. 17\ C. Feux.xndina. 



Like n. 20 : bracts long-spinose : awns of involucre straight : 



corolla white, lobes rouud-obovate, une(pial. 20*. C. spinosa. 



6. C. stellulata, Benth. Hillsides, Butte County, Mrs. Austin. 



8. C. diffusa, Benth. San Luis Obisiw {Lemmon) ; Santa Barbara, Mrs. E. 



Cooper. 



10. C. pungens, Benth. Near San Bernardino, Lemmon. 



1 7^ C. Fernandina. Procumbent, rather stout, slightly silky pubescent : leaves 

 narrowly oblanceolate, not tomentose : lower bracts foliaceous, the upper narrowly 

 linear : tube of involucre a line long, the rather stout teeth with straight awns : 

 flowers white, a line long ; lobes nearly equal, broadly oblong, the alternate ones 

 slightly narrower. 



San Fernandino Canon, Los Angeles County, Mrs. A. E. Bush. This species and C. spinosa 

 differ from the rest of the subsection in the straight awns of the involucre. 



18. C. Xanti, Watson. Near Grafton, Southern California, Lemmon. 



20^ C. spinosa. Resembling C. uniaristata : bracts more rigid, lanceolate, 

 attenuate to a long spine : involucral segments unequal, one or two often much the 

 larger, all with straight spines : flowers white ; lobes round-obovate, entire, the 

 alternate ones a half smaller. 



Near San Bernardino, Lemmon. 



21. C. brevicornu, Torr. Camp Independence, Inyo County, Matthews. 



25. C. Watsoni, Torr. Sz Gray. Camp Independence {Matthews) ; I'nion 

 County, Oregon, JI''. G. Ciisick. 



Page 39. 9. HOLLISTERIA, Watson. 



Involucre unilateral, of 3 equal slightly united herbaceous linear blunt bracts, 

 2-flowered, solitary and sessile in the axils. Perianth turbinate, menil)ranous, G-eloft 

 to the middle. Stamens 9, on the throat, included. Styles slender. Akene gla- 

 brous, ovate, triangular above. End^-yo curved, the orbicular cotyledons accum- 

 bent to the slender radicle. — A small fragile difl'usely branched leafy annual, white- 

 woolly throughout; leaves all foliaceous, cuspidate, apparently alternate with a very 



