275 
Recent Work on the Bryophyta. 
Haplozia splicerocavpa, the latter accompanied by other hygrophilous 
bryophytes. On dry rocks, chiefly with southern exposure, the 
cryptogamic flora shows two facies, one dominated by the lichen 
Calicinm chlorinum, the other by species of Gyrophora and other 
lichen genera, accompanied by a few bryophytes. Schade gives 
detailed results of his observations on the various factors of the 
habitats described—light, air temperature, soil temperature, tem¬ 
perature inside the patches of bryophytes and lichens, relative 
humidity, evaporation, water content of the rock-surface, etc. 
The internal temperature of the moss- and liverwort-patches is 
intermediate between the temperature of the substratum and that 
of the air ; in shaded places it is always below the latter, in sunny 
places always higher. In summer this internal temperature is 
higher than the soil temperature; in winter it is lower than the soil 
temperature but higher than the air temperature. 
F. CAVERS. 
LITERATURE REFERRED TO. 
1. Andrews, A. le Roy. “Notes on North American Sphagnum .” The 
Bryologist, 1911, pp. 72-75; 1912, pp. 1-9. 
2. Baumann, A., and Gully, E. “ Untersuchungen iiber die Humussauren. 
II. Die ‘ freien Humussiiuren ’ des Hochmoores: ihre Natur, 
ihre Beziehungen zu den Sphagnen and zur Pflanzennahrung.” 
Mitteilungen der Konigl. Bayr. Moorkulturanstalt, Stuttgart, 1910, 
pp. 32-165. 
3. Buch, H. “ Ueber die Brutorgane der Lebermoose.” Inaug.-Diss., 
Univ., Helsingfors, 1911, 69 pp. 
4. Crampton, C.B. “The Vegetation of Caithness considered in relation to 
its Geology.” Edinburgh, 1911. 
5. Deutsch, H. “ A Study of Targionia hypophylla." Boi. Gazette, vol. 53, 
1912, pp. 492-503. 
6. Evans, A. W. “ Hepaticae of Puerto Rico. x. Cololejeunea, Leptocolea, and 
Aphanolejeunea." Bull., Torrey Bot. Club, vol. 38, 1911, pp. 251-286. 
7. Evans, A. W. “ Branching in the Leafy Hepaticae.” Annals of Botany, 
vol. 26, 1912, pp. 1-37. 
8. Garjeanne, A. J. M. “ Die Verpilzung der Lebermoosrhizoiden.” Flora, 
Band 102, 1911, pp. 147-185. 
9. Giesenhagen, K. “ Die Moostypen der Regenwalder.” Ann. jard. bot. 
Buitenzorg, Ser. 2, Suppl. 3, 1910, pp. 711-790. 
10. Goebel, K. von. “ Morphologische und biologische Bemerkungen, xx. 
Radula epipliylla Mitt, und ihre Brutknospen.” Flora, Band 104, 
1912, pp. 164-166. 
11. Grebe. K. “ Die Kalkmoose und deren Verbreitung auf den Kalkforma- 
tionen Mitteldeutschlands.” Festschrift des Vereins fur 
Naturkunde, Kassel, 1911, pp. 195-238. “Die kalkreiche 
Silikatgesteine und ihre Moosflora.” Ibid., pp. 259-283. 
12. Grebe, K. “ Beobachtungen iiber die Schiitzvorrichtungen xerophiler 
Laubmoose gegen Trocknis.” Hedwigia, Band 52, 1912, pp. 1-20. 
13. Greenwood, Helen E. “ Some Stages in the Development of Pellia 
epipliylla." The Bryologist, 1911, pp. 59-70, 77-83, 93-100. 
14. Gyorffy, I. “ Bryologische Beitrage zur Flora der HohenTatra.” Magyar 
Botanikai Lapok, 1910, etc. 
15. Irmscher, E. “ Ueber die Resistenz der Laubmoose gegen Austrocknung 
und Kalte.” Jahrb. fur wiss. Bot., Band 50, 1912, pp. 387-449. 
16. Juel, O. “ Ueber den anatomischen Bau von Riccia Bischojfii .” Svensk. 
bot. Tidsckrift, Band 4, 1910, pp. 190-166. 
17. Janzen, P. “ Moosmosaik.” Ber. d. westpreuss. Bot.-Zool. Vereins, 
Danzig, 1912, pp. 239-256. 
