Beiblatt zu den Botanischen Jahrbüchern. Nr. 70 13 
formation; chersia, a series of such formations: chersophyta, 
dry waste plants; chersophilus, dwelling in dry wastes. 
II. Names of Groups of Formations, based upon physical factors. 
1. Medium or stratum. 
Geophytia (77, 7, land; wurztov, eta, tó, ta, plant formation), 
land plant formations; geophyta, land plants; geophilus, 
land-loving, terrestrial. 
Hydrophytia (böpo-, water-; guzztov, plant formation), water 
plant formations; hydrophyta, water plants; hydrophilus, 
water-loving, aquatic. 
2. Temperature. 
Macrothermophytia (uaxpoc, great; Mënz, heat; gutetov, 74, 
formation), tropical plant formations; macrothermophyta, 
tropical plants; macrothermophilus, dwelling in the tropics. 
Mesothermophytia (vés0<, middle), temperate plant formations; 
mesothermophyta, temperate plants; mesothermophilus, 
dwelling in the temperate zone. 
Microthermophytia (ytxpd<, small, little, short), boreal plant 
formations; microthermophyta, boreal plants; mierother- 
mophilus, dwelling in boreal regions. 
3. Water content. 
Mesophytia, moist land plant formations; mesophyta, moist 
land plants; mesophilus, dwelling in moist land. 
Xerophytia, dry land plant formations; xerophyta, dry land 
plants; xerophilus, dwelling in dry land. 
Hydrophytia, wet land or water plant formations; hydro- 
phyta, wet land or water plants; hydrophilus, dwelling in 
wet land or water. 
4. Light. 
Heliophytia (Atos, ó, the sun), sun plant formations; helio- 
phyta, sun plants; heliophilus, dwelling in the sunshine. 
Sciophytia (oxux, 7, shade), shade plant formations; sciophyta, 
shade plants; sciophilus, dwelling in the shade. 
Scotophytia (oxoroc, ó, darkness), darkness plant formations; 
scotoph yta, darkness plants;scotophilus, dwelling in darkness. 
9. Soil. 
Eurotophytia (sópoz, @ros, ó, mould, dank decay), leafmould 
plant formations; eurotophyta, leafmould plants; euroto- 
philus, dwelling in leafmould. 
Oxygeophytia (é§d<, sour), humus plant formations; oxygeo- 
phyta, humus plants; oxygeophilus, dwelling in humus. 
