573 



him. diam., deeply sunk in the stroma. Ostiola prominent, obtusely 

 conical, sometimes convergent so as to cause the erumpent part of the 

 stroma to appear quadrisulcate. Asci stipitate, p. sp. 35 x 5-6 ji. 

 Sporidia subbiseriate, allantoid, yellow, slightly curved, with a nucleus 

 in each end, 6-8 x 1^-2 yt. 



" On dead limbs of Callicarpa, South Carolina (Ravenel). 

 Closely allied to the preceding species. 



D. azedarachtse, Cke. Grev. XI, p. 108. 



Sxsicc. Rav. F. Am. 744. 



"Erumpent. Stroma black, convex, suborbicular, same color 

 within. Perithecia compressed. Asci clavate. Sporidia allantoid. 

 pale brown, 12 x 3 //.'' 



On branches of Melia, South Carolina. 



The specc. in Rav. F. Am. have the stromata thickly scattered, 

 convex-tuberculiform, 1J-2 mm. diam., roughened above by the prom- 

 inent, obtusely conical ostiola. Perithecia 4-8 in a stroma, about J 

 mm. diam., not compressed. Asci stipitate, p. sp. about 35 x 6 //, 8- 

 spored. Sporidia subbiseriate, allantoid, yellowish, 6-8 x 1^-2 ft. 

 The stroma seems to have been light-colored inside and out when 

 fresh. These notes do not agree well with the published character 

 quoted above. The specc. do not differ essentially (only in the rather 

 larger stromata) from D. Callicarpce, B. & Rav. 



D. radiata, Ell. Am. Nat. Feb. 1883, p. 196. 



Stromata 2-3 mm. diam., orbicular, elliptical or sinuous, subhemi- 

 spherically rounded above and closely embraced by the laciniately 

 cleft epidermis, circumscribed by a black line which does not penetrate 

 to the wood. Perithecia membranaceous, |-| mm. diam.. ovate- 

 globose, deeply sunk in a light-colored, tuberculiform stroma. Ostiola 

 obtuse, scarcely prominent. Asci clavate, with a slender stipe, p. sp. 

 about 35 x 6 /*. Sporidia conglomerated, yellowish, allantoid, slightly 

 curved, 6-12 x 2-2 J //, with a nucleus in each end. 



On dead limbs of Ulmus, Decorah, Iowa (Holway). 



Outwardly resembles Diatrypella verruciformis. 



D. sambucivora, (Schw.) 



Spharia sambucivora. Schw. Syn. N. Am. 1275. 

 Diatrype sambucivora, Cke. Grev. XIII, p. 38. 



Emergent-superficial, becoming black, longitudinally aggregate*] 

 conflue'nt, becoming superficial as the bark falls away, surface uneven, 

 rough, but not crustose. The separate tubercles are ovate or of 

 irregular shape. Perithecia rather large, numerous, polystiehons. 



