ROBINSON AND GREENMAN. — fiENUS ZINNIA. 19 



■t- t- Achenes longer, narrower, oblong, ■) or 4 lines in length. 



•w Hirsute with spreading hairs : rays rather broad, patulous, yellow 



as well as the disk. 



14. Z. pauciflora, L. Erect roughish-pubescent annual, some- 

 what corymbosely branched above : peduncles at maturity enlarged 

 upwards and fistulous : the yellow heads about an inch in diameter. — 

 Spec. ed. 3, 1269; Lam. 111. t. 685, f. 1 ; DC. Prodr. v. 535. Z. lutea, 

 Giertn. Frucht. ii. 459, t. 172. — Chiapas, Mexico, Nelson, no. 3074; 

 Andes of Peru, Mathews, no. 456, and Bolivia, Mandon, no. 38 ; also St. 

 Thomas, W. I., Eggers, no. 400. Introduced in W. Africa at Cape Verd. 



*+ ++ Pubescence of the stem much finer, appressed or very rarely spreading: 

 rays red or purple, mostly narrow and suberect or scarcely spreading. 



15. Z. multiflora, L. 1. c. Erect annual with habit of the pre- 

 ceding, or subsimple : leaves ovate and acute or ovate-oblong and 

 obtusish : peduncles (frequently short or none) often thickened upwards. 

 — L. f. Dec. Ups. 23, t. 12 ; Curtis, Bot. Mag. t. 149. Z. tenui flora, 

 Jacq. Icon. PL Rar. iii. 590. Z. leptopoda, DC. Prodr. v. 535 (merely 

 weak form or state with more slender peduncles). Z. Floridana, Raf. 

 New Fl. iv. 70. Z. intermedia, Engelm. in Wisliz. Tour N. Mex. 107. 

 Z. Mendocino, Philippi, Sert. Mendoc. Alt. 21, fide Baker, Fl. Bras. vi. 

 pt. 3, 178. — The commonest and most widely distributed species ex- 

 tending from Florida, Chapman, Curtiss, no. 1417, to Texas, Drummond, 

 no. 115, Lindheimer, no. 93 (but in these localities probably introduced; 

 see Gray, Syn. Fl. i. pt. 2, 253) ; S. Arizona near Ft. Huachuca, Lem- 

 mon, no. 2761; throughout Mexico, Sonora, Wright, no. 1213, Thnrber, 

 no. 920, Schott, Hartman, no. 104; Chihuahua, Thurber, no. 832, Schott, 



Wislizenus, Palmer, nos. 115, 156, Pringle, no. 316; Coahuila, Palmer, 

 nos. 574, 575; San Luis Potosi, Parry 8^ Palmer, no. 438; Orizaba, 

 ^OM/'yef«<, no. 1682, Botteri, nos. 73, 516, 940, Seaton, no. 345; Cor- 

 dova, Bourgeau, no. 1633; Guadalupe, Bourgeau, no. 500; Oaxaca, 

 Andrieux, no. 314, L. C. Smith, nos. 813, 957 ; Chiapas, Ghiesbreght, no. 

 126; Guatemala, Heyde ^ Lux (no. 3808 of Donnell Smith's sets); 

 Venezuela, Fendler, no. 1974; Bolivian Andes, Mandon, nos. 39, 40, 

 and Bang, no. 207. 



The yellow-rayed specimens, referred by various authors to this spe- 

 cies, have in most instances, if not always, the pubescence of Z. pauci- 

 flora, to which it seems best to refer them. 



* * Leaves elliptic, petiolate, dentate. 



Z. Liebmannii, Benth. & Hook. f. Leaves squamulose-hirsute 

 above, ferrugineous beneath : peduncles (|uadrangular-sulcate : chaff 



