—35 
Ramalina denticulata var. canalicularis Nyl. 
Synonymy: Ramalina denticulata var. canalicularis Nyl. Recog. mono. 
Ram. 126 (28). 1870. 
Type: In the Nylander Herbarium, Universitets Botaniska Institution 
Helsingfors, fide author. 
Type Locality: “Mexico, Orizaba.” Fr. Muller. 
Original Description: “Differt thallo attenuato et attenuato-ramaso, 
laciniis (latit. 1 millim. vel minus latis) canaliculatis.” 1. c. 
Figure: PL VII, f. 1,2, et 5. 
Observations: Except the type, I have not seen any specimens from our area. 
Note: Ramalina subcalicaris Nyl. Recog. mono. Ram. 138 (40). 1870. 
This species, the type of which is in the Museum d’Histoire Naturelle, Paris, 
fide author, was defined as follows: “Subsimilis est Ramalinae canaliculatae 
[ = Ramalina canaliculata Tayl., sensu Nyl]., sed sporis curvulis vel subcurvulis 
(longit. 0.015-23 millim., crassit. 0.005-7 millim.) et apotheciis (calicaribus) 
majoribus.” 1 . c. The type, from “Orizabae” . . . “Mexico,” is the only- 
specimen I have examined. The plant is marginally tuberculate and appears, 
except for slightly smaller spores, to approach closely R. alludens of which I 
believe it will prove to be a synonym. It also strongly suggests R. denticulata 
var. canalicularis Nyl., except again for its spores. 
Note: Ramalina leptosperma Nyl. Flora 34:412. 1876. This large ellip- 
soid-spored species was described by Nylander from Cuba. I have not seen 
any material and can give only his diagnosis, as follows: “thallus pallidus 
lineari-attenuatus (latit. 5 centimetr. vel altior, latit. 1-2 millim., crassit. circiter 
0.1 millim.), canaliculatus (interdum hinc inde marginalibus conniventibus 
trabeculis tenuibus transversis conjunctis), nitidiusculus, nervoso-rugosus 
(apicem versus minus rugosus), ramosus, ramulis acutiusculus; apothecia carneo- 
pallida concava (latit. 1-3 millim.), receptaculo rugoso, marginalia; sporae ob- 
longae rectae, longit. 0.008-0.010 millim., crassit. 0.0025-0.0035 millim. 
Specie facie fere R. canaliculatae, sed mox distans thallo tenuisve nervoso- 
rugoso et minutie sporarum.” 1. c. 
( B ) Cortex terete or subterete-linear ( Teretiusculae Wain.) 
Ramalina attenuata (Pers.) comb. nov. 
Synonymy: Physcia attenuata Pers. Annal. Wettau. Gesell. Nat. 2 : 18. 1810. 
Ramalina rigida Ach. Synop. Meth. Lich. 294. 1814. 1 
Ramalina gracilis (Pers.) Nyl. 
In part Ramalina rigida of Tuckerman. 
Type: In the ’s Rijks Herbarium te Leiden, Holland, fide author. 
Type Locality: “Insulae St. Domingo.” 
Original Description: “ Pallens, ’laciniis attenuatis tenuibus teretiusculis 
scutellis planiusculis sessilibus. 
Ex eadem regione cum priore (P. straminea, St. Domingo), hanc Physciam 
habeo, quae Usneam hirtam non male refert. Lorula sensim attenuata, scu- 
tellis vix marginatis angustiora sunt.” 
1 “ Thallo-glabro tereti ramoso sordide albo-pallescente, tuberculis sorediformibus ad- 
sperso, ramis complicatis tortuosis attenuatis,” l. c. 
