1106 Deuteromycelse, Tubercularineese, Phragmosporse, Exospdrium. 



^pxt. S. Phragffiosporje. 



i 



EXOSPOmUM Link - Syll. IV p. 755, X p. 738, XI. p. 656. 



1. Exosporium paiUdum i^.ll. et Ev. BuU. Torr. Bot. Cl. 1900, p. 59. 43(j 

 — Sporodocliiis pcr epidermidem erumpentibus, 3-4 vel piuribus ' 

 aggregatis, basi stromatice connexis v. interdum solitariis, '/2-V4 

 mra. diam., pierumque supra applanatis, intus griseolis, superficie 

 sporophoris firmis 20-30 « 6-7 hyalinis (demum nigris?) simplici- 

 bus dense vestitis; conidiis oblongis v. oblongo-ellipsoideis, 2-se- 

 ptatis, interdum 3-septatis, plus minusve constricti^, flavo-brun- 

 neis, 25-50 * 14-18. 



Hab. in ramis emortuis E-liois Toxicodendri pr. Morri- 

 son, Colorado Amer. bor. (Bethel). — Ab E. davuligero Lk. 

 differt sporophoris continuis hj-alinis. 



2. Exosporium ceiatum (Welw. et Curr.) A. L. Smith, Journ. of Bot. ^^ 

 1898, p. 179, Sporochsminm celatum Welvv. et Cuit. Trans. Linn. 

 Soc. 1898, p. 291. — Sporodochiis hypophyilis, minutis, matricis 

 pilis tectis, in epiphyllo tumores .nigros efficientibus; conidiis ob- 

 longis, utrinque leniter attenuatis, sed obtusis, brunneis, plerum- 

 que 3-4-septatis, 35-40 ^ 10, pedicello brevi crasso h^-alino prseditis 



Hah. in foliis Crotonis Draconopsidis, Angola Africge 

 CWelwitsch). 

 8. Exosporium palmlyorum Sacc Missouri Bot. Gard, IX. annual Ee- * 

 port. 1898, p, 150 c. fig. — Maculis amphigenis, minutis, subor 

 bicularibus, 1-3 cm. diam., brunncis, interdum in area lata espal 

 lente lohorum sparsis ; sporodochiis supcrficialibus, in areoUs brun- i 

 neis dense gregariis, punctiforraibus, nigris ; sporophoris oblongis, 

 continuis, oUvaceo-riAfis, 14-16 ^ 5-6, in puIvlnuUim convexum 60- 

 80 u. latura, 30 fx. altum dense constipatis, monosporis; conidiis 

 e sporophoro radiantibus, fusoideis, rectis v. curvis, 80-90 « 8-9, 

 sursum obtuse tenuato-acutatis, basi obtusis, 8-10-&eptatis, nou 

 constrictis, olivaceo-fuscis, utrinque pallidioribus, conspicue, raaxime 

 prima «tate, verruculosis. 



Hah. in foliis, quine valde vexantur et demum moriuntur, Phoe- 

 nicis canariensis, tenuis et reclinatce in Amer. bor. — 

 Mycelium circumcirca et infra sporodochia serpit et constat ex 

 hyphis filiformibus, ramosis, septatis, olivaceis, 3 a. crassis, hinc 

 inde denticulatis. Conidia juvenilia sunt breviora, sursiim obtuse 



