347 



branches or geniculi developed at right angles, otherwise one floccus coupled wth an- 

 other: sporidiferous branchlets erect or wart-shaped: spores acrogenous, simple, at 

 length iiTegularly scattered : episporium membranaceous, smooth or hairy ; nucleus 

 solid. — Corda, Icon. Fimg. pt. 5. 



Z. Berkeleyi, (Ryl. MSS.) Flocci spreading, horny, brown, branched, with hemi- 

 spherical swellings (" geniculi ") produced at many of the septa, from which originate 

 the branches ? Sporidia oval or ovate, smooth ; nucleus simple. Fig. 2, /", g, and 3, 

 .T, y, (the sporidia). 



On Monotropa roots generally. 



No. 3 is also an undescribed species. 



Tribe. — Sepedoniei. 



Sepedonium, Link. Sporidia globose (filled with sporidiola), at first covered by 

 the flocci of the fleecy mycelium.f Eng. Flor. vol. v. pt. 2, p. 350. 



S. Wilsoni, (Ryl. MSS). Flocci fleecy, intei-woven or fasciculate, adnate, pellucid, 

 white, rarely dichotomously branched : sporidia globose, tubercled or granulated, not 

 appendiculated, but attached by the disk on their flattened surface ? Fig. 2, h, i, k, I. 



On Monotropa from Southport. 



Since the former portion of this article was written, I have examin- 

 ed a dried specimen of Monotropa gathered at Streatley, Berks, sent 

 because it had the flocci considered to be roots, growing on its cap- 

 sules and stem ; on examination I found the following : — 



Tribe. — Dematiei. 



Cladosporium, Link. "Sporidia arranged in" (more or less) "moniliform branch- 

 lets, at length falling off"; flocci septate (above" ?). Eng. Flor. vol. v. pt. 2, p. 338. 



C. Leesii, (Ryl. MSS.) Flocci spreading, pellucid, straw-coloured : sporidia of 

 various sizes, contained in branchlets, which are at length moniliform and septate ? 

 yellow, as the flocci. Fig. 3,p, q, r. 



the character. The " geniculi," viewed with a power of 350 diameters (by Ross), ap- 

 pear to be only tumours ; the outline of the floccus opposite them is perfectly continu- 

 ous, and what have been considered contractions or doublings seem but to be septa 

 left in some measure free by the swellings. Vide fig. 2, g. 



f As this species is allied to a parasite of Monotropa already described, though not 

 to be found in the ' English Flora,' it may be well to add the description as given by 

 its discoverer. 



TuBURCiNiA, Fries. Sporae rotundatae, insequales, opacae ; sporidiis minimis, suc- 

 cedentibus farctae, plantis putridis innatae ; floccis variis, tenellis, intertextis, evanes- 

 centibus, primo adherentibus. 



T. Monotropce. Erumpens, sporis nigro-fuscis inaequalibus flocci evidentioribus. 



Prsecedenti (T. Orobanchae) aflanis, sed magis superficialis est, et erumpens, spori- 

 dia fuscescent, et flocci copiosiores adsunt. 



Genus quoad fructificationem ad Sepedonium accedit. 



