fLORA OF THE ISTHMUS Or PAJ^AMA. 247 
shrubs, 
like ri«a»&Ja wsneo?*,?, and resembling a beard ; hence its popular name, Barba deljudio. 
The spedmOHS are fertile, several inches long, and vary much in the breadth of the segments ; they 
undoubtedly belong to Ea,naUm, to which genu. Fries, in hi. index to the Dmen.an figures, !», me- 
dentaUy referred the Acharian JJcctoria umeoidcs. It is next to impossible to limit the 8pee.es of lia«a. 
Ima in a satisfaetor,^ manner. The Eev. W. A. Leighton, who has pursued the microscopical analysu. of 
the Liclc,,. with singular diUgence, informs me that the sporidia of all the European species are dike. I 
should be much disposed to suspect that the present plant is a very narrow and elongated form of he «. 
/!■«.;«., being in fact intermediate between that species and S.farina«a,«.A agreemg ™o^ ^'"^ t'- 
former in the length, with the latter in the breadth of the thalluB, To this species may poss.b ly be added, 
as a remarkable variety, R. retifonnu, Tuck. Enum. N, Anier. Lieh. p. 12 {B. Mc,^u.n, Tayl. ! in Herb. 
Hook.), in which the thallus is branched (by reason of perforation ?) so as to resemble a net. 
1198. Pakmelia perforata, Ach., Jletb. Lieh. p. 217. Volcano of Chiriqni, Veragnas. 
This Lichen seems to be very generally dispersed over the hotter and temperate regions of both heuii- 
spheres. The apotheeia are imperforate in the specimen which I have examined. ^ Sometimes the f.iU- 
^own apotheeia are both perforate and imperforate in the same individual, as m specmiens coUected m the 
Himalaya mountains by Messrs. Strachcy and Winterbottom. 
1199. Parmelia punicea, Ach., Meth. Lieh. p. 167. Volcano of Chiriqui, Vcraguas. 
This species is very like P. sulfusca, Aeh., but the apotheeia are bright red. The hypothallns is not 
visible in Dr. Seemann's specimen. Dr. Montague observes that the differently-shaped spondia effectu.,lly 
distinguish the two Lichens. See Slontague's Crj-pt. Cub. p. 209. 
1200. Sticta daM^cornu, Anctt., ^^.macrophylla. Chni-ch. Bab. MSS.-S. macrophylla, Delise 
Stict. p. 110.- 1. 10. fig. 4.-Eschweil. in Mart. Fl. Brasil. torn. i. p. 213.-Fec Essa. sur les Crj-pt. 
des EC offic. p. 129. t. 33. fig. l.-Engl. Bot. t. 2097. Bouquete, Volcano of Chu-iqui, Veragnas,- 
sterile 
ElchweUer {ut supra) and Taylor (Fl. Hib. p. 151) suggest that this plant is probably -'^^ 
from S. ^,n.eorn,,, and I have accordingly ventured to umte them. D.iferent as extreme formsma) appear 
there are numerous intermediate states eonneetlng the two so-ealled spec.es. S. muerophyll. occurs m 
Ireland, the East Indies, the Mauritius, and various parts of South America. 
1201. Sticta dama^cornis, Anett., var. «>, Church. Bab. MSS.-S. rufa, Delise, Stict. p. 47. 
t 2 f 4. Isle of Chirambira, Darien ; fertile. 
DeUse has ranged this Lichen next to S. aurata, Ach., with which it has no affinity. I can see little 
diiferent between 'the .. r.f. and the broader form of «, »«.<.%«„ ^^ j^; ";^ ^ J "^'^Z 
t^ :^: :7t:S::^::::xr-= :::>:i:^:::rL one of 
L~d thTs. rufi, as well as S. ,nacropl.,Ua, are forms of S. ia,n.cor,u. To the same Lichen should 
fce^mited, I tbiiik, a consideraUe number of Delise's speciea. 
nv <<i\r>^ n 117 t 11 fie 47. Bouquete, Volcano of Cliiruiui, 
1202. ^TiciA. flavescem Dolisc, btict. p. 117. t. ii. ng. ^/. ^ i 
Veraeuas. • .„ , i , t i 
The fi^ure and description of Delise apply well enough to the Lichen from Bouquete, but I have no 
