GENERAL CLASSIFICATION OF MYXOMYCETES. 



GROUP XII.— MYXOMYCETES, WALLR. 



Arrangement of Orders (9). 



A. — Wall of spore sac not encrusted with lime — 

 Section 1. Peritricha} — Capillitium absent or formed from wall of sporo sac. 



61. ToBULiNACE^E — Wall of spore sac not perforated. 



62. Cribrariace^ — Wall of spore sac perforated. 



Section 2. Columelliferae — Capillitium originating from central columella. 



63. Stemonitace^e — Arising from every part of elongated columGlla. 



64. LampkodermacejE — Arising from apical portion of columella. 



Section 3. Calotricliefe — Capillitium not springing from columella. 



65. Arctriace^ — Threads attached. 



66. TrichiacEjE — Threads free. 



B. — Wall of spore sac ivith external deposit of lime — 

 Section 4. Lithodermeae — Capillitium present. 



67. DidymiacejE — Threads without lime. 



68. Physarace^e — Threads with lime. 



C. — Without special spore sac. 



69. PLASMOUiorHOKACE^ — Plasmodia, or naked motile masses of protoplasm, formed. 



Order LXI. — TuBULiNACEiE, Mass. 



Genus (1) — 



401. Tubulina, Pers. 



Order LXII. — Cribrariace.e, Mass. 



Genera (2) — 



402. Euteridium, Ehrh. 



403. Clathroptychium, Roat. 



Order LXIII. — Stemonitaceve, Rost. 



Genus (1) — 



404. Stemouitis, Gled. 



Order LXIV. — LAMPRODERMACEiE, Mass. 



Genus (1)— 



405. Laraproderma, Rost. 



Order LXV. — Arcyriace^e, Rost. 



Genera (4) — 



406. Periclifflna, Fries. 



407. Lycogala, Pers. 



408. Prototrichia, Rost. 



409. Arcyria, Hill. 



3868. 



Order LXVI. — Tkichiace^, Rost. 



Genus (1) — 



410. Trichia, Hall. 



Order LXVII. — Didymiace.e, Rost. 



Genera (4) — 



411. Chondrioderma, Rost. 



412. Didyraium, Schrad. 



413. Spumaria, Pers. 



414. Diacba3a, Fries. 



Order LXVIII.— Phtsarace.e, Rost. 



Genera (6) — 



415. Craterium, Trent. 



416. Physarum, Pers. 



417. Badbamia, Berk. 



418. Tilmadocbe, Fries. 



419. Leocarpus, Link. 



420. Fuligo, Hall. 



Order LXIX. — Plasmodiophorace,*, Zopf. 



Genus (1) — 



421. Plasmodiophora, Zopf. 



