British Lahoulbeniaceae. Winifrede L. Hake. Si 



Four specimens are mounted on this slide, all being of the short form as 



distinguished from the other form ^\•ith the elongated perithecial stalk. 



L. Rougetii Mont, and Robin in Robin. Hist. Xat. Veg. Par. ( 1 853 ), p. 62 2 and Atlas, 



pi. X, fig. 2 : Mont., Syll. Cr\-pt. (1S56), p. 250. L. europaea Thaxt. in Proc. 



Amer. Acad. xx\'-in (1893), p. 167; Mon. (1896), p. 310; Mon. (1908), p. 351. 



On BrachivKS crepitans Linn. England. B.M. Xo. 347. 



Three specimens are mounted on the shde, one of which shows an antheridium 

 on the inner appendage. 



"It seems quite certain that what I pre\-iously described as L. europaea is 

 in reaJitA- the species figured by Robin, although the plates are quite misleading, 

 apparenth" representing indi\-iduals in which the appendages have become 

 more or less abnormal through injury-. So large a number of European Brachini 

 have been examined on which L. europaea is the common species, that there 

 seems no doubt as to the correctness of the reference." Thaxter, 1908. 

 *L. diibia Thaxt. in Proc. Amer. Acad. xxx^^II (1902), p. 35; Mon. (1908), 

 P- 353. Pl- LV, fig. I. 



On Philonthiis poJitits Fabr. Alverstoke. B.^I. Xo. 363. Co-t^-pe. 



Of the six specimens mounted one sho%vs the antheridia ven,- well developed. 

 L. dubia "is perhaps too near L. rigida, but differs in its copious appendages 

 and in the often pronounced sub-terminal enlargement of the perithecium." 

 L. Cafii Thaxt. in Proc. Amer. Acad, xxxv (1899), p. 162; Mon. (1908), p. 406, 

 pl. Lxiii, figs. I and 2. 



On Cafia siriceus Holme. Britain. B.M. Xo. 437. Co-t\-pe. 



There are two specimens, one less mature, of which the antheridial appen- 

 dages are ver\- short. 



" The species is well marked, being clearh- distinguished by its appendages, the 

 outer and inner eventually so displaced that they he nearly side by side, and 

 consisting each of a single series of somewhat obliquely superposed cells which 

 give rise externally to simple single branches, somewhat as in the appendages 

 of the Galerita tj-pe. . . . The species is remarkably constant considering its ver\- 

 wide distribution and is not nearly allied to any other described form." 

 L. Clivinalis Thaxt. in Proc. Amer. Acad, xxxrv (1899), p. 165; Mon. (1908), 

 p. 407, pl. LXi, figs. 5 and 6. 



(i) On Clivina collaris Herbst. England. B.M. Xo. 348. Co-t}*pe. 



This slide has six specimens, one with the appendages ven,- well developed 

 bearing two branchlets at the tip. 



(ii) Hammersmith. B.^I. Xo. 456. Co-t\'pe. 



Two specimens on the shde. 



(iii) On Clivina fossor 'Linn. England. B.M. Xo. 353. Co-tvpe. (Hope Coll., 

 Oxford.) 



Six specimens on the shde. 



RHACHOMYCES. 



R. Philonthinits Thaxt. in Proc. Amer. Acad. xxx:\- (1900), p. 435; Mon. 

 (1908), p. 424, pl. XLiv, figs. 3 and 4. 

 On Philonthiis sp. British. ""B.M. Xo. 225. (Hope Coll., Oxford.) 

 The shde has two beautiful specimens both showing the characteristic 



"stigmatal mzir kings" in the uppper cells of the main axis of the receptacle. 



COMPSOMYCES. 



C. Lestevi Thaxt. in Proc. Amer. Acad. xxx\' (1900), p. 439; Mon. (1908), 



p. 428, pl. XJLIII, figs. 9-12. 



On Lesteva sicula Erich. Redhill. B.M. Xo. 453. 



There are tsvo specimens on the sUde Xo. 453 (neither with antheridia). 



^On Lesteva sicula Erich. Paisley. B.M. Xo. 452: not in the collection.] 



MISGOMYCES. 



M. Dyschirii Thaxt. in Proc. Amer. Acad, xxxv (1900), p. 443; Mon. (1908), 



p. 430, pl. LXX, figs. 9-10. 



On Dyschiriiis globosus Herbst. England. B.M. Xo. 349. Co-type. (Hope 

 CoU., Oxford.) 



M.S. 6 



