TRICHOSPORIUM. 



[ 654 ] 



TRIPHRAGMIUM. 



Fig. 769. 



joints (see MESOGLOIA). In a recent paper, 

 however, he has stated that the proper tri- 

 chosporanges and oosporanges pass into one 

 another by numerous intermediate forms, 

 and he desires to dismiss the terms in favour 

 of uni- and multi-locular sporanges. 



BIBL. Thuret, Ann. des Sc. nat. ser. 3. 

 xiv. p. 235. ser. 4. iii. p. 15. 



TRICHOSPORIUM, Fr. A genus of 

 Mucedines (Hyphomycetous Fungi), nearly 

 allied to BOTRYTIS, characterized by a caes- 

 pitose mycelium, whence arise fertile, conti- 

 nuous filaments, bearing solitary, simple, 

 acrogenous spores. T. nigrum = Sporotri- 

 chum nigrum, Fries (Syst. Myc.}, Botrytis 

 nigra, Link. 



BIBL. Fries, Summa Veg. p. 492 ; Grev. 

 Sc. Crypt. Fl. pi. 274. 



TRICHOSTO- 

 MUM, Hedw. A 

 genus of Pottiaceous 

 Mosses, so called from 

 thehair-likeperistome, 

 resembling closely that 

 of BARBULA (Tortu- 

 la), but with the teeth 

 straight instead of 

 twisted; in T. rigidu- 

 lum, however (fig. 769), 

 there exists a slight cur- 

 ling even in this genus. 

 Mr. Wilson combines 



LEPTOTRICHUM with Trichostomum rigidulum. 

 this. TheTrichostoma Fragment of the peristome 



grew on the ground with filiform teeth. 

 and on stones. Magnified 100 diameters. 



TRICHOTHECIUM, Link. (Diplospori- 

 um, Ej usd . ) . A genus of Mucedines ( Hypho- 

 mycetous Fungi), growing upon dead sticks, 

 herbaceous parts of plants, &c., forming a 

 caespitose, entangled mycelium, from which 

 arise erect fertile filaments, bearing at the 

 summit a few acrogenous, free, didymous 

 spores. These plants are nearly allied to 

 DACTYLIUM, under which Mr. Berkeley in- 

 cludes them; but apparently they may be 

 separated by the uniseptate, not multiseptate 

 spores. From some observations recently 

 published by Hoffmann, and confirmed by 

 Bail, the spores of T. roseum, when they 

 germinate, produce a mycelium whence 

 arise fertile filaments of Verticillium ru- 

 berrimum, the < spores ' of which they conse- 

 quently consider as the spermatia of this 

 plant. Several species are British, as T. 

 roseum, obovatum (Dactylium, Berk.). 



BIBL. Berk. Brit. Flor. ii. pt. 2. p. 348 ; 

 Ann. Nat. Hist. vi. p. 437. pi. 14; Greville, 



Sc. Crypt. Fl. pi. 172; Fries, Summa Veg. 

 p. 492 ; Hoffmann, Botan. Zeit. xii. p. 249. 

 1854 ; Bail, ibid, xiii. p. 673. 1855. 



TRIMMATOSTROMA, Corda (fig. 764. 

 page 646). An obscure genus of Torulacei 

 (Coniomycetous Fungi), perhaps founded on 

 thesporesof aspeciesof PHRAGMOTRICHUM. 

 BIBL. Corda, Icon. Fung.; Fries, Summa 

 Veg. p. 475. 



TRINEMA, Duj. A genus of Infusoria, 

 of the family Rhizopoda. 



Char. Carapace membranous, diaphanous, 

 elongate-ovoid, narrower in front, with a 

 large oblique lateral orifice ; expansions two 

 or three, filiform, very slender, as long as 

 the carapace. 



T. acinus=Difllugia enchelys, E. (PL 25. 

 fig. 11, after Ehr. In Dujardin's figure the 

 expansions are represented as much more 

 slender). Aquatic. 



BIBL. Dujardin, Infus. 249. 

 TRIOPHTHALMUS, Ehr A genus of 

 Rotatoria, of the family Hydatinsea. 



Char. Eyes three, red, cervical, in a trans- 

 verse row ; foot forked. 

 Jaws single-toothed. 

 T. dorsualis (PL 35. fig. 31). Body cry- 

 stalline, turgid, suddenly attenuated at the 

 foot which is half the length of the body. 

 Aquatic; length 1-48 to 1-36". 

 BIBL. Ehrenberg, Infus. p. 450. 

 TRIPHRAGMIUM, Link. A genus of 

 Uredinei (Coniomycetous Fun- 

 gi), distinguished by their tri- 

 locular spores (fig. 770). T. 

 ulmaria (Uredo ulmaria, Brit. 

 Fl.), grow upon the leaves of 

 Spircea ulmaria, forming orange, 

 subsequently blackish, effused 

 patches, bursting from beneath 

 the epidermis. Tulasne has T "phragmi U m 

 shown that it possesses all three A p e c "n a t e 

 forms of reproductive structure spore. 

 of the Uredinei, viz. 1. spermo- Magnified 350 

 gonia with spermalia-, 2. Uredo- diameters - 

 fruits, with ellipsoid or globose stylospores ; 

 and 3, perfect fruit, arising either among 

 the stylospores or in special sori, containing 

 stipitate, three-lobed spores (fig. 7/0), each 

 lobe of which is unilocular and exhibits a 

 single pore in its black tubercular outer coat. 

 The last germinate in the spring, and pro- 

 duce from each pore a tubular filament 

 which becomes divided into four or five 

 chambers, from three or four of which arise 

 single styliform processes (sterigmata), each 

 bearing a small smooth spherical " spori- 

 dium." The globular stylospores also ger- 



p- 



