E. L. EKMAX, WEST INDIAN VERNONI^. 81 



hona, Las Salinas, in ripa fluminis, alt. 100 — 150 m, Sept. 1911, 

 Miguel Fuertes n. 1392 (KU). 



Two forms can be distinguished with the material at hand, 

 one having very long-mucronated leaves and sparingly pube- 

 scent involucral scales, which are conspicuously carinate and 

 marginated. So Bucii n. 713. The other form, to which all other 

 specimens seen belong, inclusive of the type of the species, has 

 very shortly, or not at all, mucronated leaves and densely pubes- 

 cent, obsoleteh' marginated scales. Additional material will 

 certainly show^ that there are forms connecting these two 

 extreme types. 



It is an interesting fact that there are forms of V. sericea 

 subsp. racemosa, Türckheim n. 2905, 2906, showing such re- 

 semblances to V. stenophylla that they might be taken for this 

 species, were not the pappus brown instead of white. 



Yeriioiiia sericea L. C. Rich. 



Tabula nostra IV, fig. 5 (folium et cyma). 



Vernonia sericea L. C. Richard, 1792, p. 112 (sphalm. 105), quoad 

 typ. et descr., baud quoad patriam — non auct. al. 



Vernonia arhorescens Persoon, 1807, p. 404, fide Cassini; Lessing, 

 1829, p. 302; De Cändolle, 1836, p. 48 — non Sw. 



Lepidaploa phijllostachya Cassini, 1823, p. 16. 



Vernonia Berteriana De Candolle, 1836, p. 52. 



Conyza portoricensis Bertero in sched. ap. De Candolle, 1836, p. 52. 



Vernonia arhorescens Sw. ß Lessingiana Grisebach 1861, p. 353. 



Vernonia tricholepis Grisebach 1861, p. 354 p. p. — non DC. 



Cacalia sericea Kuntze, 1891, p. 971, quoad typum. 



Vernonia phyllostachya Gleason, 1906 b, p. 176; Urban, 1911, p. 619. 



Vernonia venusta Gleason, 1906 b, p. 177; Urban, 1911, p. 619. 



Pappi setse interiores persistentes, numero 45 — 50, tenues, 

 pallide brunnese, rarissimse albidse — stramineae, exterioribus 

 distinctis circ. 10-plo longiores. Corolla 5 mm longa, tubo 

 angusto, glaberrimo, long. ^|^ corollse, limbi laciniis apice subtus 

 papulosis. Antherae 0,8 mm longae, ligula long. Ye antherse, 

 auriculis breviter acutatis. 



Hab. in Porto Rico: Baudin n. 292 (P, herb. Jussieu, 

 verisimiliter spec. orig. Lepidaploce phyllostachyce Cass.); 

 Ledru (Prodr, sub nom. V. arborescentis Sw. ); Bertero (B, 

 Prodr, orig. spec. V. Berteriance DC); PLÉEn. 205 (P); Schwan- 

 ecke n. 95 (KU); Barbier, anno 1847 (? P); prope Maya- 



Ärkiv för hofanik. HuwJ 13. X:o I'l. 6 



