TROPICAL AMERICAN COMPOSITAE. 27 



which, however, has white woolly stems and petioles, and broader as 

 well as more caudate-acuminate leaves, which are 3-nerved from 

 above the base rather than feather-veined. 



E. PSEUDO-DALEA (DC.) Gomez & Molt. Ann. Hist. Xat. Madrid, 

 xix. 272 (1890). Critonia pscudo-dalca DC- Prod. v. 140 (1836). 

 Recent material, agreeing with this species in all essential characters 

 of habit, inflorescence, florets, and achenes, as well as in the toothing, 

 venation, and punctation of the leaves, still exhibits such marked 

 differences in the rounded leaf-base closely sessile upon the stem as 

 to present a decidedly exceptional appearance when compared with 

 typical specimens. There is also a tendency on the part of some 

 material now available to have much more coarsely toothed leaves 

 than the type. To provide appropriate classification for these varia- 

 tions the following varieties may be proposed. 



Var. typicum, foliis breviter serrato-dentatis (dentibus 0.6-0.9 mm. 

 altis 3-5 mm. latis) basi cuneatis; petiolo 6-8 mm. longo. — Cuba: 

 Ramon dc la Sagra (Gr.); in crevices of rocks at the Farallones, 

 Wright, no. 1311 in part (Gr.). 



Var. apodophylluin, var. nov., foliis bre^^te^ serrato-dentatis 

 (dentibus ut apud var. typicum) basin versus angustatis sed ima basi 

 rotundatis arete sessilibus vel cum petiolo brevissimo 1-2 mm. longo 

 munitis. — Cuba: base of coastal cliffs near Rio Yamuri, Oriente, 

 6, 8 Dec. 1910, J. A. Shafer, no. 783 (type, Gr., X. Y.); margin of 

 rivulets near Pinar del Rio, 3 Dec. 1860-1864, Wright, no. 1311 in 

 part (Gr.). 



The plant of Shafer has sessile leaA-es, that of AYright has leaves of 

 closely similar form, but very shortly petioled (petioles 1-2 mm. long). 



Var. macrodontum, var. nov., foliis arguteserrato-dentatis, dentibus 

 2-A mm. altis 4-6 mm. latis acuminatis; lamina basi cuneata; petiolo 

 1.4-2.5 cm. longo. — Cuba: Guajaibon, 4 Nov. 1860-1864, Wright, 

 no. 2812 (type, Gr.), limestone clifi', Baiios San Vincente, Prov. 

 Pinar del Rio, 12-16 Sept. 1910, .Y. L. & E. G. Britton & C. S. Gagcr, 

 no. 7451 (Gr.). 



E. (§ Eximbricata) psilodorum, spec, nov., aspectu primo glaber- 

 rimum solis in petiolis pedicellisque obscure puberulum herbaceum 

 perenne vel fruticosum (basi ignota) ; caule tereti laevissimo flavido- 

 viridi erecto folioso superne paniculatim ramoso; foliis oppositis 

 lanceolato-ovatis longe acuminatis saepe falcatis argute serratis 

 (derrtibus ca. 1 mm. altis ca. 3-4 mm. latis incurvis) basi rotundatis 

 aliquando obliquis utrinque glaberrimis fla\'ido-viridibus a basi vel 

 paulo supra basin 3-5-nerviis impunctatis 6.5-7.5 cm. longis 2-3 cm. 



