BOTRYTIS. 



C 117 ] 



BOTRYTIS. 



B. (Poh/cic/is) cana, Sclnnidt. Fertile 

 filaments cinoreons or whitish, branched at 

 the apex; spores large, oval. On rut(in<i: 

 steins and leaves. Mucor racemosusj Biil- 

 Hard, t. 504. tig. 7. 



B. {Pohjadis) vulgaris, Fr. (fig. 263). 

 Fertile filaments grey, divid.^l at the apex 

 into lobe-like branches, on wliich are col- 

 lected the globose minute spores. Common 

 on rotting plants. B. acinorum, Pers. Fre- 

 seuius, BeUr. z. Mi/c i. pi. 2 (?). Pohjadis 

 vult/an's, Nees, Si/st. fig. 57. 



B. vera, Fr. Fertile filaments grey, 

 branched above, forming spikes about the 

 slender apices. On decaying substances, 

 fungi, Sec. Mucor Botrytis, Bolton, pi. 132. 

 fig. 3. 



B. crustosa, Fr. Fertile filaments -white, 

 simple, tritid and verticillate ; spores glo- 

 bose, ternunal. On stems and Icixves. 



B. citrina, Berk. Mycelium white ; fer- 

 tile filaments erect, articulated, branched ; 

 branches subcymose, and, hke the obovate 

 spores, lemon-coloured. On dead brandies 

 of cherrv-trees. Berkeley, Ann. N. H. i. 

 p. 262, pi. 8. fig. 12. 



B. ten-estris, Pers. Fertile filaments 

 v^hite, quaternately divided at the tips, each 

 tip bearing a single globose spore. On rot- 

 ten .sticks. Berk. I. c. pi. 14. fig. 24 ; Sta- 

 chyJirlixm terrestre, Grev. So. Crypt. Fl. 

 ph 257. 



B. Jonesii, Berk, and Br. Fertile fila- 

 ments erect, fa ^^^l-coloured, branched above ; 

 branches and branchlets divergent, mostly 

 opposite, the last fasciculated, the centre 

 always sterile and very acute; spores round- 

 ish, spiny. On dung. Attn. N. S. 2 ser. 

 xiii. pi. 15. fig. 12. 



B. Tilli'fii, Desm. Fertile filaments 

 branched, fulvous ; branchlets very short, 

 whorled ; spores subglobose. On mosses 

 and various leaves. Desmaz. Cn/pt. Exs. 

 fa.sc. V. No. 226 ; Ann. cl. Sc. Nat. 2 ser. x. 

 308. 



B. (Pero7iospo7-a) urticee, Libert, MSS. 

 (Berk.). Fertile filaments gi'eyish lilac, 

 loosely di^-ided above ; branches forming 

 an acute angle ; extreme branchlets simple 

 or forked, sometimes ciu'ved, rarely inflated ; 

 spores large, ovate, apex papillilbrm. On 

 nettle-leaves. Berk. Ann. N. H. ser. 2, vii. 

 p. 100. 



B. {Peronospora) parasitica, Pers. Fer- 

 tile filaments white ; Branches ramulose ; 

 .spores very large, globose. Caspary has 

 found here cysts containing minute spores 

 (sporidanyia). On Cruciftrae (turnips, cab- 



bages, &c.). Berkeley, JT Ho7-t. Soc. i. pi. 4 

 fig. 26; Corda, Ic. Funy. v. pi. 2. fig. 18 

 Mucor Botrytis, Sowerby, pi. 359. 



B. (Peronospora) cffusa, Greville. Fertile 

 filaments purplish-gi ey, branched above ; 

 branches short, divaricate ; spores large, 

 oval. Frequent on the lower face of leaves 

 of spinach, 



B. {Peronospora) curia, Berk. Fertile 

 filaments simple, abbreviated, denticulate 

 at the tips, grey-brown ; spores oval. On 

 Anemone nemorosa. Berk. Ann. Nat. Hist. 

 I. c. pi. 8. fig. 13. 



B. {Peronospora) destructor. Fertile iila- 

 nients grey, erect, scarcely septate ; branches 

 alternate, the last forked, hooked, and diva- 

 ricated; spores obovate, much attenuated 

 at the base. Very destructive on species of 

 Allium (onions &c.). Berk. Ann. Nat. Hist. 

 vi. p. 436, pi. 13. fig. 23. 



B. (Peronospora) Arenaricp, Berk. 

 White; fertile filaments dichotomous 

 above, divaricate-forked, not hooked at the 

 tips ; spores ovate. On the leaves of Are- 

 7iaria trinervis. Berk. ./. Hort. Soc. i. p. 31, 

 pi. 4. fig. 22. 



B. (Peronospora) Vicics, Berk. White ; 

 fertile filaments sparingly branched, elon- 

 gate ; branchlets bifid , not hooked ; spores 

 obovate, apiculate. On common Vetches 

 (a distinct species, purple, is said to grow 

 on peas). Berk. /. c. pi. 4. fig. 23. 



B. {Pei'onospora) arborescens. Berk. 

 White ; fertile filaments very much branched 

 above, di-trichctomous, somewhat forcipate 

 at the apex ; spores smallish, subglobose. 

 On common red-poppv leaves. Berk, /. c. 

 pL 4. fig. 24. 



* B. {Pei'onospora) yanylio7iifor77iis, Berk. 

 White, in patches ; fertile filaments branched 

 above ; branchlets curved, dilated in gang- 

 lioid thickenings below the tips ; spores 

 small, subglobose. On lettuces. Berk. /. c. 

 pi. 4. fig. 25. B. ye7ninafa, Unger, Bot. 

 Zeit. V. pi. 6. fig. 9. Bre7nia lactucce, Regel, 

 Bot. Zeit. 1843, i. p. 665, pi. 3 B. 



B. (Peronospo)-a) 7nacrospora, Ung. Fer- 

 tile filaments erect, several from the same 

 point, white, branched above ; spores very 

 large, elougate-py rif orm . On leaves of pars- 

 nips and other Umbelliferse. linger, Exan- 

 theme, pi. 2. fig. 14 R 



B. {Peronospora) i7ifestans, Montagne 

 (PI. 26. figs. 5, 6). The Potato-fungus. 

 This grows in tufts on the lower surface of 

 the leaves, and also on the tubers of the 

 potato, forming white mealy spots. The 

 mycelium ramifies in the intercellular pas- 



