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Physcia stellaris (L.) 

 TucKM. (Fig. 6.) This species is 

 a very common one, growing on 

 living, as well as dead trees, 

 sometimes almost covering the 

 entire trunk. It is dainty and 

 very pretty. It grows so closely to 

 the substratum that it is difficult 

 to collect. The thallus is grayish 

 white, with many-cleft lobes, which 

 are crowded together and are 

 Fig. 6. Physcia stellaris X 2. somewhat convex. Beneath, the 



thallus is pale with short gray fibrils. The apothecia are small to medium 

 in size, are sessile and usually very crowded. When young the disk is gray 

 pruinose, when older it is brownish-black, with an entire margin, which is 

 rolled over. 



Physcia crtspa (Pers.) Nyl, (Plate III. 3). Thallus greenish gray, 

 sometimes with a pink tinge. The lobes are rather wide, palmately cut and 

 flat, the turned over edges are covered with pale soredia which form a crust 

 at the centre. Beneath, the thallus is light brown with short, dark brown 

 fibrils. Apothecia, which are not common, are of medium size, sessile, the 

 disk dark brown, the margin incurved and often granulate. P. crisp a is found 

 in the Southern States, especially along the coast. 



SELIQERIA CAMPYLOPODA, KINDB. 



By Elizabeth G. Britton. 

 *S. campylopoda Kindb. Mac. Cat. 6; 41. 1862. Bryin. Eu. & N. A. 2:213. 

 1897. S. recurvata (Hedw.) Br. & Sch., Mac. Can. Musci. no. 60. 



This species was originally collected on limestone rocks, September i6th, 

 1890, at Owen Sound, Ontario, mixed with 5. Donii. It was described as 

 resembling S. recurvata, but differing in its shorter leaves, without the sub- 

 ulate point of that species, and with the vein ending below the apex in the 

 perichaetial leaves: it was also stated that "the male flower is fixed on the 

 side of the female." Prof. Macoun has again collected this species, on May 

 nth, 1901, on limestone rocks, Niagara River, and as the specimens are in 

 much better condition than type material, it seems desirable to amend and 

 supplement the original description. 



In spite of its small size the species is conspicuous, because of the tufts 

 it makes, abundantly fruiting, with the young bright green leaves held and 

 matted together by the blackened, older plants. They would also attract 

 attention at once by the light yellow, curved pedicels, the pale color of the 

 capsules, and the red peristome and lid. In some plants the red of the lat- 

 ter is quite brilliant, contrasting with the pale slender beak. The teeth are 

 dark red, spreading when dry, and are inserted below the mouth of the cap- 

 sule, which is bordered by three or four rows of narrower, transveijsely 

 elongated cells. The walls of the capsule are thin, with oblong cells below, 



