f
892
A scophore.—Erumpent, cæspitose ; perithecia snbglobose,
papillate, bursting through elongated fissures in the bark, black ;
asci elongated, cylindrical; sporidia uniseriate, elliptic, uniseptate,
brown.— Goo*« Seem. Jourre. (1866), iy. t. 45, f . 7. Didymosphoeria
rubi, Fckl. Sym. Myc.p. 141 (1869). Sphceria epidermidis.
Pr. var. rubi, Auct.
On bramble.
Sometimes the perithecia are arranged in short lines.
2 6 7 8 . Sphæ ria ap p en d icu lo sa .
Sphæria.”
B . & Br. “ Appendiculate
_ Perithecia scattered, globose, nestling under the blackened
epidermis in small orbicular polished spots, pierced in the centre ;
sporidia ovate-lanceolate, appendiculate.—B. & Br.Ann. N.H.no.
618, t. l , f . 20. Curr. Linn. Trans, xxii. t. 58, f . 97.
On dead bramble.
Perithecia globose, scattered, nestling under small orbicular,black shining
specks, and penetrating them hy the ostiolum, round which there is often a
little white meal ; sporidia ovato-lauoeolate, at first hyaline with an apicu-
late process which gradually separates by a constriotioii, and ultimately falls
oft. Kesembling closely S. tomicum. Lev. but differing materially in the much
larger and more highly developed sporidia.—B. & Br. Sporidia (’OOl in.) '025
m.m. with the appendage.
λ Sporidia coloured, with 3, or more septa.
2 6 7 9 . S phæ ria fu s c e lla . B. 4 Br. “ Brown Eose Sphæria.”
Scattered, covered ; perithecia brown, depressed ; asci linear,
obtuse ; sporidia uniseriate, oblong-elliptic, sometimes slightly
curved, triseptate.—®. & Br. Ann. N .H . no. 636, t. 11, f . 20.
Curr. Linn. Trans, xxii. t. 59, f . 103.
On dead twigs of rose. March. Easton.
Scattered, forming minute pustules; perithecia depressed, subglobose,
brown ; asci linear, containing eight sporidia in a single row ; sporidia pale
brown oblong-elliptio, obtuse, triseptate, by no means constricted at the
articulation, sometSmes slightly curved. Distinguished from S. sepincola by
its minute brown penthecia, and even elliptic obtuse sporidia. There is no
sign oi ostiolum externally.—j5. & B r, Sporidia (-0007 m.) ‘0177 m.m. long,
2 6 8 0 . Sphæ ria ■unicaudata. B. 4 Br. « One-tailed Sphæria.”
Perithecia minute, covered, subglobose, collapsing ; sporidia
clavate, quadriseptate, caudate.—®. & Br. Ann. N .H. no. 886, t.
11,/. 31. ’
On Clematis vitalba. Batheaston.
Scattered beneath the cuticle, subglobose, collapsed when dry ; asoi oblong
varying inform according to the pressure of thesporidia ; sporidia ( üU15in.)
■035 m.m. long, clavate, triseptate, the upper articulation hyaline, the three
following brownish, often containing a giobose nucleus, appendage, or htth
articulation hyaline, gradually tapering or constricted near the tip. Very
rarely there are four brown articulations.—B.&Br.
2 6 8 1 . Sphæria tam a x ic is . Grev. “ Tamarisk Sphæria.”
Scattered under the epidermis, which is very convex and ruptured
in the centre ; mouth very short, obtuse, not exserted ;
sporidia rather dark brown, triseptate, slightly curved. Qrev. t.
45. Fng.Fl. v. p. 270. Curr. Linn. Trans, xxii. Í.58,/. 81.
On dead branches of Tamarisk.
Perithecia globose, slightly depressed, their black colour appearing through
he e p i d e r mi s . S p o r i d i a (-0008in.) -02 m.m. long.
the
2 6 8 2 .
Sphæzia eu ste g ia . Cooke. “ Collapsing Willow
Perithecia scattered, subglobose, then depressed ; ostiola elevating
and piercing the cuticle, at length collapsing, and resembling
a asci cylindrical; sporidia uniseriate, fusoid, mostly
triseptate, sometimes with 4 or 5 septa, occasionally one of the cells
is transversely divided, pale brown.— Cooke exs. no. 387. Valsa
tetratrupha. var. simplex. Seem. Journ. Bot. (1866). t. j . 20.
On willow twigs.
2 6 8 3 . Sp hæ ria a h h z e v ia ta . Cooke. “ Short saccate Sphæria.”
P y o n id ia .— Perithecia commonly scattered over bleached
spots, small, black, and prominent, covered by the epidermis ;
stylospores elliptical, triseptate, brown, slightly constricted at
+he septa.—Hendersonia rosæ, Westendorp Bull. De Brux. 11. no.
9. Cooke Seem. Journ. (1866). no. 36.
A s o o p h o r e .— Perithecia minute, in short parallel lines, convex,
papillate, at length perforated ; asci short, broadly elliptic ;
sporidia crowded, oblong, triseptate, torulose, brown.—Goo*e
Seem. Journ. (1866) iv. i.4 5 ,/. 6.
On dead stems of bramble. Jan.—April.
Forming distinct, and visible, short parallel lines, hut not confluent ; asoi
very short and broad, elliptical, pyriform or obovate ; spondia crowded together,
oblong, triseptate, slightly torulose, pale brown when mature; the
linear disposition of the perithecia forming short lines of black dots, and the
short, hroad, nearly obovate asoi are very charaotenstie. The stylosporous
form often accompanies tlie ascigerous.