APPENDIX. 203 



Ustilago urceolorum, Tul. Sedge Smut ; produced on the 

 glumes and utricles ; epidermis soon bursting ; spores in a compact 

 mass, afterwards breaking u]3, globose, rather large, granulated. 

 — Surrounding the seed of various Carices ; as, Carex proecox^ steU 

 lulata, recurva, and pseudo-cyperus. Autumn. Not uncommon. 

 (Plate YI. figs. 109—111.) 



Ustilago longissima, Tul. Elongated Smut; produced 

 on the leaves in Hnear, long, parallel, dirty-olive patcnes ; epi- 

 dermis bursting longitudinally ; spores globose, breaking up into 

 minute granules, olive-black. — On leaves of Poa aquatica and 

 fluitans. Summer. Common. (Plate V. figs. 105—107.) 



Ustilago olivacea, Tul. Olive Smut ; infesting the enlarged 

 receptacle ; epidermis soon bursting ; spores olive-green, powdery, 

 minute, mixed with filaments. — On Carex riparia. Not common. 

 (Plate VI. figs. 126, 127.) 



Ustilago hypodytes, Fr. Grass-culm Smut ; produced on 

 the culms beneath the sheaths, afterwards exposed; spores 

 minute, subglobose, brownish-black. — On the culms of various 

 Grasses. Summer. . Sometimes not uncommon. (Plate V. figs. 

 100, 101.) 



Ustilago Maydis, Corda. Maize Smut ; produced on the 

 stems, germens, &c. ; epidermis at length bursting; spores 

 spherical, minute, brownish-black, ^urface covered with echinu- 

 late warts. — On stems, &c., oiZea mays. (Plate V. ^g. 108.) 



Ustilago Montagnei, Tul. Beaksedge Smut; produced 

 on the seeds ; ejDidermis bursting ; spores slightly angular, small, 

 dark-coloured, intermixed sparingly with fragile filaments. — On 

 seeds of Rhyncospora alba. Not common. (Plate Y. figs. 96, 97.) 



Ustilago typhoides, B. and Br. Eeed Smut ; produced on 

 the stems of reeds, forming thick bullate patches several inches 

 long, occupying whole internodes, covered by their sheath ; spores 

 globose, rather large. — On stems of Arundo phragmitis. Autumn. 

 Not uncommon. (Plate YI. figs. 128, 129.) 



Ustilago Salveii, B. and Br. C0CKSF09T Smut ; produced 

 on the leaves, forming elongated parallel sori on the upper sur- 

 face ; spores obovate, rather large, rough with minute granules. 

 — On leaves oi Dactylis glomerata and other Grasses. Not common. 

 (Plate YI. figs. 117-119.) 



Ustilago grammiea, B. and Br. Banded Smut ; forming 

 little transverse bands consisting of short parallel black lines, 

 •^ of an inch or more in length ; spores globose, very minute.— On 

 stems of Aira aquatica and A, caspitosa. Uncommon. (Plate YI. 

 figs. 120— 122.); j 



