204 



FLORA OP NEW ZEALAND. 



Fungi. 



3. Xylaria anisopleuron, Mont. Ann. des Sc. Nat. Ser. 2. v. 13. p. 34-8. 

 Hab. On dead wood, Eiver Manawatu, Colenso. 



The specimens are young, and at present without peritheeia, but the general form is just that of Dr. Montague's 

 species, from Cayenne, who half suspects that it may be only a form of X polymorphs. 



4. Xylaria castorea, Berk.; stipite brevi primurn spongioso-velutino demum nudo rugoso, clavula 

 obtusa ovata vel subelliptica valde compressa minutissime aroolata, ostiolis prominulis punctato-aspera. 

 (Tab. CV. Kg. 10.) 



Hab. On dead wood, Colenso. 



Stem about | of an inch high, at first clothed with spongy down, then naked, longitudinally wrinkled; head 

 ovate, or subelliptic, strongly compressed, obtuse, about 1 inch long, and *-f broad, sometimes giving off a second 

 head at the base, minutely areolate, dotted with the slightly prominent ostiola. Asci slender; sporidia subelliptic, 

 __!_ of an inch long.— A very distinct species, resembling most X. lingua, LeV. True X poh/morpha has the spo- 

 ridia about ^J^ of an inch long. The name indicates the resemblance of the head to a beaver's tail.— Plate CV. 

 Fig. 10. Xylaria castorea, natural size. a. Asci and paraphyses, magnified, b. Sporidia, magnified 250 diameters. 



5. Xylaria tuberiformis, Berk. ; suberosa, subglobosa, piriformis, stipite brevissirno 1. obsolete, ostiolis 

 prominentibus, sporidiis magnis. (Tab. CV. Kg. 11.) 



Hab. On dead wood, near the Eiver Manawatu, Colenso. 



Sessile or shortly stipitate, subglobose, i~i of an inch in diameter, pileiform; cuticle minutely cracked, and 

 rough with little points, not laccate ; white and corky within. Peritheeia elliptic. Ostiola large, prominent. Sporidia 

 cymbiform, ^ of an inch long.— Resembling X pilafimis, Berk, et Curt., but without its laccate coat, and 

 having far larger ostiola and sporidia. Its nearer affinities are with X anisopleuron, Mont., and X polymorpha ; at 

 first sight it looks like a small Truffle.— Plate CV. Pig. 11. Xylaria tuberiformis, natural size; a, sporidia; b, 

 orium obtusum, from ostiola: — magnified 250 diameters. 



Gen. LXIV. HYPOXYLON, Bull. 



Stroma liberum, friabile, horizontal, nigrum. Peritheeia peripherica. Asci perfect!; sporidia octona. 



The horizontal stroma distinguishes this genus from Xylaria. Splaria vernicosa is, however, almost interme- 

 diate. All the species are of more or less interest, and several occur in the tropics ; they are quite distinct from the 

 matrix, and therefore need not be confounded with the species of Diatrype. (Name from uVo, and £v\ov, wood.) 



1. Hypoxylon concentricum, Pries. Spiraeria concentrica, Bolt. 



Hab. On dead wood, Bay of Islands, J. B. II; Eiver Manawatu, etc., Colenso. 



2. Hypoxylon annulalum, Mont. Mora Chilena, p. 445. t. 10./. 3. 

 Hab. On dead bark. 



The New Zealand specimens are accompanied by a thick, abundant, clothy mycelium, consisting of closely-inter- 

 woven threads, very much branched, whose ultimate ramuli are alternate, and zigzag, with frequently bifid, spinu- 

 lose apices, resembling, on a small scale, the flocci of a Mycenastrum. 



Gen. LXV. DIATEYPE, Fries. 



Stroma horizontal, erumpens, cortice subconnatum. Peritheeia collo longiusculo prasdita. 



The Pungi of this group are known from Hypoxylon, by their being more or less confluent with the matrix, and 

 therefore approximating more to the type of such Lichens as Trypethelium. The tropical species, which are nume- 

 rous, exhibit usually a distinct habit, and differ from those of the temperate zones. (Name from &o, through, and 

 Tpvrca, a perforation^) 



