1895.] Botany. 483 
Ph. astroidea (Fr.) Nyl. Trees. Orizaba (Smith); Cordova. 
(Smith and Bruner 45). 
Ph. crispa (Pers.) Nyl. Trees. Orizaba; Aguascalientes. (Smith 
46). 
Apparently one of the commonest Physcias in this region. 
Ph. major Nyl. Trees. Orizaba; Cordova. (Smith 43). 
The specimens agree very well with Nylander’s description and 
with specimens in hb. Tuckerm. 
Ph. dilatata integrata Nyl. Trees. Cordova. (Smith 48). 
Ph. caesia (Hoffm.) Nyl. A single specimen from Orizaba, infertile. 
(Smith 44). 
Ph. obscura endochrysea Nyl. “On oak at Jalapasco, foot of Mt. 
Orizaba.” Alt. 10,500 ft. A single specimen.” (Smith 90 
Ph. setosa (Ach.) Nyl. A single specimen, infertile, collected on 
trees, Orizaba. (Smith 47). 
Umbilicaria. 
U. anthracina reticulata (Duf.) Schaer. Common on rocks at 14,000 
15,500 ft. Mt. Orizaba. (Smith 81). 
This plant is so different from typical anthracina that it should, 
more properly, be regarded as a distinct species. 
U. hyperborea Hoffm. “Growing on rocks at lower snow line, 15,000 
15,500 ft.” Mt. Orizaba. (Smith 59). 
U. hirsuta papyria Ach. “ Foot of Orizaba.” Alt. 15,000 ft. (Smith 
60). A single specimen. 
U. hirsuta grisea (Sw.) Th. Fr.? Rocks. Orizaba. Alt. 15,000 ft. 
(Smith 82). This plant is placed here with some doubt. If it is 
really grisea it is certainly distinct as a species from hirsuta. 
U. vellea (L.) Nyl. With the preceding. (Smith 84). 
ticta. 
S. aurata aa Ach. Trunks of trees, etc. Orizaba. (Smith and 
Bruner 57). 
The specimens are in fine fruit, the apothecia being £ apk, 
marginal, oblique,” with a thin inflexed thalline margin. 
S. tomentosa (Sw.) Ach.? Orizaba. (Smith 92). Sterile and frag- 
mentary. 
ns (Michx.) Ach. Trees, etc. Orizaba, (Smith and 
Brunet 58). Sterile. According to Wainio (Lich. Bres. I, 189) 
this species should be called St. weigelii (Ach.) Wain. 
S. sylvatica (L.) Ach.? Rocks, etc., among moss. Orizaba. (Bruner 
91 
Sterile and fragmentary. 
