-58- 



Sticta scrobiculata 

 (Scop.) Ach. Fig. 7. The 

 thallus is large, almost 

 round, is irregularly pitted, 

 in color is a light green and 

 at the margin is usually- 

 darker, with a reddish tinge. 

 The rounded, wavy lobes 

 are frequently covered with 

 light gray soredia. The 

 under surface is a light 

 brown with a close nap 

 through which appear pale 

 spots, smaller and rounder 

 than those in 5, amplissima 



Fig. 7. Stic t a scrobiculata. Red, V,. P^^^onaria, Apo- 



thecia are very rare, they 

 are small and scattered, the disk is a dark brown with an entire margin. 



S. scrobiculata is found in the northern states, on rocks, occasionally on 

 trees where it does not reach its highest development. While not a very 

 common species it is not rare, and is one of the most interesting species of 

 this handsome genus. 



WEST INDIAN HOSSES IN FLORIDA. 



Elizabeth G. Britton. 



On our way home from Cuba, we stopped off for a day at Miami, and 

 drove to Peacock Inn, at Cocoanut Grove. After leaving the Tropical Lab- 

 oratory of the Agricultural Experiment Station, the road passes through a 

 "Hammock" or grove of hard wood trees, with a tangled growth of shrubs 

 and vines giving shade and moisture and some wood loam. Elsewhere, the 

 pine woods are dry and arid, and the coral rock so devoid of soil that it is a 

 wonder anything will grow there ; they have to dig holes with picks, instead 

 of shovels, to plant their orange trees. 



One of the commonest mosses found was Octoblepharum albidum, grow- 

 ing on the trunks of palmettos in the axils of the leaves, with Vittaria line- 

 ata. It is found in the same places in Cuba, associated with two species of 

 Polypody. In the hammocks, however, mosses and hepatics found a con- 

 genial home and five species were collected which I had not before seen 

 growing. One of these is not described in the Manual, so I give a descrip- 

 tion: 



Microthamnium thelistegium (CM.) Mitt. J. L. Soc. 12:504. 1869. 

 Hypnum thelistegium, CM, Syn. Muse. 2:269. 1851. 



Plants pale green or yellow ; stems irregularly or pinnately branched, 

 the branches short, 2-5 mm, long, spreading; leaves small, ovate-acumin- 

 ate, concave, clasping and slightly decurrent at base, vein short, double or 



