SPHAEROSTILBE 189 



rounded, 20-30 x 3"5-4*5 M, on long conidiophores, forming 

 dense tufts. 



Nectria goroshankiniana (Wahrl.) is parasitic on the roots 

 of Vanda tricolor. 



Perithecia solitary or in small clusters, deep red, squamu- 

 lose, spores, 12-15 X 4"S /* Conidia as in N. vandae. 



The above two species are described in detail by Wahr- 

 lich in Bot. Ztg., July 23, 1886. 



Nectria theobromae (Massee) occurred on a ' bleeding ' 

 patch of bark of a cacao-tree from Grenada, W. Indies. 

 This appears to be one of the species of Nectria that forms 

 'bleeding' wounds on the bark of the cacao-tree. Nectria 

 Bainii (Massee), previously described as forming similar 

 wounds on cacao pods, differs from the present species in 

 having the perithecia shaggy with golden-yellow, scale-like 

 hairs. 



Perithecia smooth, orange-red, asci cylindrical, 8-spored, 

 paraphyses present, spores elliptical, i-septate, 28-30x8-10 /x. 



Massee, Kew Bulletin, p. 218 (1908). 



SPHAEEOSTILBE (Tub.) 



Perithecia, asci, and spores as in Nectria, but the perithecia 

 accompanied by a Stilbum-Yike conidial stage. 



American coffee disease. Until quite recently Stilbum 

 ilavidum (Cooke) was supposed to be the cause of this 

 disease; it is in reality yet the cause, but the Stilbum has 

 been shown to be the conidial form of a fungus that 

 has been called Sphaerostilbe flavida (Mass.). The disease has 

 been recorded from Costa Rica, Guatemala, New Granada, 

 Venezuela, Nicaragua, Dutch Guiana, and Brazil. The coni- 

 dial form attacks the foliage, berries, and young shoots. 

 On the leaves the fungus forms circular, whitish spots up to 

 \ in. across, that show on both surfaces of the leaf. Such 

 leaves soon fall, and within a month the trees of an entire 

 plantation may be entirely destitute of leaves, yet loaded 

 with berries, which, however, do not reach maturity. One 

 or two white spots appear on diseased berries. On the 

 young shoots the spots are whitish and usually elongated. 

 After the spots have been in evidence for a short time, the 

 surface becomes studded with the fruit of the fungus, under 



