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APPENDIX. 203
UstilapfO Tirceolorum, Tul. Sedge S:mut ; produced on the
glumes and utricles ; epidermis soon bursting ; spores in a compact
mass, afterwards breaking up, globose, rather large, granulated.
— Surrounding the seed of various Carices ; as, Carex prcecox, stellulata,
recurva, and jpseudo-cypenis. Autumn. Not uncommon.
(Plate VI. figs. 109-111.)
Ustilago longissima, Tul. Elongated S^iut; produced
on the leaves in linear, long, parallel, dirty-olive patches; epidermis
bursting longitudinally ;
spores globose, breaking up into
minute granules, olive-black.— On leaves of Foa aquatica and
fluiians. 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 YI. 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 ;
sp9res
spherical, minute, brownish-black, surface covered with echinulate
warts.— On stems, &c., of Zea mays. (Plate V. fig. 108.)
Ustilago Montagnei, Tul. Beaksedge Smut ; produced
on the seeds ;
epidermis bursting ; spores slightly angular, small,
dark-coloured, intermixed sparingly with fragile filaments.— On
seeds of Rhyncospora alba. Not common. (Plate V. figs. 96, 97.)
Ustilago tsrphoides, B. and Br. Reed Smut ; produced on
the stems of reeds, forming thick buUate patches several inches
long, occupying whole — internodes, covered by their sheath; spores
globose, rather large. On stems of Arundo phragmitis. Autumn.
Not uncommon. (Plate VI. figs. 128, 129.)
Ustilago Salveii, B. and Br. Cockseoot Smut ; produced
on the leaves, forming elongated parallel sori on the upper surface
; spores obovate, rather large, rough with minute granules.
— On leaves of Dactylis glomerata and other Grasses. Not common.
(Plate VI. figs. 117-119.)
Ustilago grammica, 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
sfems of Aim aquatica and A. ccespitom. Uncommon. (Plate VI.
figs. 120—123.)