CYTISPORA. 



[ 234 ] 



DACTYLIUM. 



tapering; inferior antennae five-jointed; 

 terminal claws short ; mandibles robust ; 

 teeth blunt ; eyes two. 



24 living British species ; also some Cre- 

 taceous and Tertiary species. 



BIBL. Brady, Linn. Tr. xxvi. 439, and 

 Ann. N. H. 1872, ix. 55 ; R. Jones, Oeol 

 Mag. vii. 77, 158. 



CYTIS'PORA, Ehrenb. A genus of 

 Sphaeronemei (Coniomycetous Fungi), re- 

 markable for emitting the minute bodies 

 formerly regarded as spores, agglutinated 

 together into a more or less gelatinous mass, 

 in the form of a tendril. The relationship 

 between the forms called Cystispora and va- 

 rious species of Sphceria has long been no- 

 ticed ; and Fries stated that he had seen C. 

 leucostoma pass into S. leucostoma. C.fugax 

 was stated by Berkeley to be exactly ana- 

 logous to S. salicina. Kecent researches 

 seem to prove that the present genus, with 

 Septoria and others, are really only forms 

 belonging to various Ascomycetous Fungi, 

 and that they bear the same relationship to 

 the latter as the spermogonia of LICHENS 

 do to the theciferous fructification. Hence 

 the so-called spores of Cytispora &c. ap- 

 pear in reality to be the spermatia or stylo- 

 spores of the Sphaeriacei. As these ques- 

 tions are not yet completely worked out, 

 we retain the names of these pseudo-genera 

 and species at present. See SPHJERIACEI. 



Cytispora ruoescens,~Fr. Disk dirty brown; 

 spores (?) reddish. On Rosaceae. 



C. chrysosperma, Pers. Disk black; 

 spores yellow. On Poplar bark. 



C. carphosperma, Pers. Disk dingy; 

 spores straw-coloured. On Hawthorn and 

 other Rosacse. 



C, leucosperma, Pers. Disk dirty white ; 

 spores white. On various trees. Common. 

 Nemasporum rosarum, Grev. Scot. Crypt. 

 Fl. t. 20. 



C. fuyax, Bull. Disk dirty brown; 

 spores pale. On Willow branches. Very 

 common. 



C. orbicularis, Berk. Disk yellowish; 

 spores pale vinous red. Upon small orange 

 gourds. Berkeley, Ann. Nat. Hist. i. pi. 7. 

 fig. 6. 



C. Hendersoni, Berk, and Broome. Disk 

 whitish; spores large, dirty white. On 

 Dog-rose. Berk, and Br. Ann. Nat. Hist. 

 2 ser. v. 379. 



C. pulveracea,Berk. Br. Flora = Ceutho- 

 spora phacidioides, Desm. 



BIBL. Berkeley, Brit. Flor. vol. ii. pt. 2. 

 281, Crypt. Bot. 331 ; Berk, and Broome, 



1 Hooker's Jn. of Bot. iii. 319 ; Tulasne, Ann. 

 Sc. Nat. 3 s<r. xv. 375 (Ann. N. H. 2nd 

 ser. viii. 114) ; Ann. Sc. Nat. xx. 129 ; 

 ibid. 4 ser. v. 115 ; Bot. Ze.it. xi. 49 (1853). 



CYTOBLAST. See NUCLEUS. 



CYTOBLASTE'MA, BLASTEMA, or 

 PROTOPLASM. The amorphous proteine- 

 substance of which animal and vegetable 

 cells are more or less entirely composed. 

 See CELLS, and PROTOPLASM. 



CYTODE. A term applied by Hackel 

 to an organism consisting of a simple lump 

 of sarcode = to our protoplast (1850). 



BIBL. Hackel, Gen. Morph. i. 269. 



CYTOLEI'CHUS, M6gn. A genus of 

 Acarina, near to Sarcoptes. 



C. sarcoptoides, has the body rounded, 

 the rostrum obtuse, and the tarsus of the 

 2nd pair of legs with a short cirrus directed 

 upwards or outwards. In the air-sacs and 

 bronchi of the Gallinae. 



BIBL. Me*gnin, Parasites, 153. 



D. 



DACRY'MYCES, Fries. A genus of 

 Tremellini (Hymenomycetous Fungi), con- 

 sisting of lobulated gelatinous bodies grow- 

 ing upon wood. D. stittatw, a very com- 

 mon species on moist rotting wood, is 

 orange, turning brown when dried. Tu- 

 lasne has published some curious ob- 

 servations on this genus, showing that the 

 spores produced on the basidia of the 

 external hymenial layer, are of two kinds ; 

 of which one kind germinates, while the 

 other produces minute stalked bodies, one 

 from each chamber of the septate spore, 

 destitute of gernrinative power (spermatia ?) 

 (PI. 27. fig. 5). 



BIBL. Berkeley, Hook. Brit. Fl. v. pt. 2. 

 210; Crypt. Bot. 353; Greville, Sc. Crypt. 

 Fl. pi. 159 ; Tulasne, Ann. Sc. Nat. 3 se*r. 

 xix. 211, pi. 12&13. 



DACTYLI'NA,Nyl. A doubtful genus 

 of Lichens. 



D. arctica, Hook. , a singular fungus-look- 

 ing plant, inhabits Arctic America. 



BIBL. Leighton, Linn. Jn. ix. 192, pi. 2. 

 figs. 11-17. 



DACTYL'IUM,Nees. A genus of Muce- 

 dines (Hyphomycetous Fungi), nearly allied 

 to Trichothecium, consisting of moulds 

 growing over decaying plants. Fries refers 

 Corda's species of Dactylium to Dendry^ 

 phium. One species, Dactylium oogenum, 

 Montagne, is remarkable for its place of 



