1 
FLORA OF THE ISTHMUS OF PANAilA. 161 
all those of tte disc-florets are abortive ; therefore I should not think this is accidental. On the other haud, 
this fact is most singular, because the disc-florets are all perfect ; and in the closely allied Chrysanthellum 
p'ocumhens, Eich. (which has also the flower-heads hcterocarpous), the acha?nia of the disc-florets are indeed 
flattened, with a winged margin, but not at all sterile, the achoBnia of the ray most resembling those of our 
species, and being not distinguishable except by the narrower portion of the not-furrowed base. More- 
over C. procumbens, and all other species hitherto known, differ from ours at first sight, by the deeply and 
variously cleft leaves. 
602. Galea prunifolia, H. B. K., Nov. Gen. et Sp. torn. 4. p. 294. no. 1. tab. LOG.— Dc Cand. 
Prodr. torn. 5. p. C72. no. 6. — Eupatorium riyidum, "Willd. ! Ilcrbar. no. 15,167 (non Swartz). 
Savanas about Panama. 
Dr. Seeniuiui's specimens are somewhat stouter, and have larger flower-heads, containing twenty to 
twenty-five florets. Otherwise there is not the slightest difference between them and the original specimens 
in Kunth's and Willdenow' s Herbaria. 
603. Tridax procumbens, Linn., De Cand. Prodr. torn. 5. p. Q79.—MJbisia elongata, Willd. ! 
Herbar. no. 16,366. In waste places about Panama. 
604. Gnaphalium oxyphylhm, De Cand. ? var. ^, semilanatum, De Cand. Prodr. torn. 6. p. 225. 
no. 21, j8. Volcano of Chiriqui, Veraguas. 
I am not quite coi-taiu whether Dr. Seemann's specimens belong to this species, not having seen an ori- 
ginal one of it. The short diagnosis given by De CandoUe agrees well in general with them, but the leaves, 
even the uppermost ones, are scarcely decurrent ; they are semiamplexieaul and really adnate, very acute at 
the summit, cobweb-like above, and densely covered with a wliitish wool below, two inches or more long, 
3-4 lines broad. The stem is floccose-lanate, terminating with a branching and compound corymb ; the. 
flower-heads are bcU-shapcd, containingaboutfiftyflowers,of which 7-10 perfect ; the scales of the involucre 
hyaline, shining, somewhat rufescent and very acute"; the pappus is reddish. It is however closely allied to 
Qiiaplalium polyceplialum, Michx., but diff'ers by the simple stem being not branched below the middle, by the 
much longer leaves, and by the almost acuminate scales of tlie involucre. I possess the same species from 
Caracas, gathered by Moritz. 
605. Gnaphalium spicatum, Lam. (nou Willd.), De Cand. Prodr. torn. 6. p. 232. no. 66. A'ol- 
cano of Chiriqui, Veraguas. 
606. Nexjrol^na lobata, K. Bro^vn, De Cand. Prodr. torn. 6. p. 2d2.—Con7/za lobata, Linn. 
—Galea lobata, Swartz. Panama, on the outskirts of forests. 
Dr. Seeniaun gathered two forms of this common plant : one with a stout habit, having the chaff and 
involucral scales blunt; the other with a slender habit, and the chaff and involucral scales acute. Both 
however are certainly mere varieties of the same species. 
007 Ekechtites cardmfoUa, De Cand. Prodr. torn. 6. p. 291. no. l.-Bcntham in Orstcd 
Composita: Centro-Amcricanai, p. 42. no. 174 (1853) .^E. sulcata, Gardner in Lond. Joui-n. of Bot, 
tom. 7. p. 419 (teste cl. Bcntham, 1. c). On road-sidcs and in waste places, Panama, Taboga. 
Dr Seemami's specimens are almost glabrous, but since ]Mr. Bentham, 1. c., informs us that this species 
is most vanable in pubescence, I am no longer doubtful that they reaUy belong to this species, which how- 
ever nearly approaches to E. Ueracifolia, Eaf., from which it differs by the more crowded corymb, the shorter 
pedicels and involucre, the inner scales of it being free and not cohering, and by the outer ones bemg 
