ALGOLOGICAL NOTES 



329 



3. GoNGROSiRA ScHMiDLEi Eichter, Phyc. Univers. no. 680. 

 Stereococais Schmidlei (Eichter) Schmidle in Ber. Deutsch. Bot. 

 Ges. xix. 1901, p. 16. Diam. cell. 8-14 (plerumque 9-12) /a ; cell, 

 diametro l|-4-plo longioribus. 



Hab. On stones in stream, Eandan Woods, Worcestershire; 

 forming a stratum about 1 mm. in thickness, slightly encrusted 

 with lime. 



The specimens were collected by Miss E. Acton in June, 1911. 

 The branches are short, mostly unilateral, and, as a rule, the 



Fig. 4. — Dicranochate hritannica, x 500. The cell-contents are not 

 depicted in the drawings. 



chloroplasts are retained only by the terminal cells (from one to 

 three) of each branch. The parietal chloroplast was large and 

 lobed, containing from one to three pyrenoids. G. Schmidlei 

 appears to be a very distinct species, and this is the first time it 

 has been recorded for the British Islands. It should be compared 

 with G. fastigiata (Borzi) Schmidle and G. circinata (Borzi) 

 Schmidle. 



4. Dicranochaete britannica, sp. n. Cellulae parv£e, depresso- 

 globosae vel angulari-globosse, margine ventrali plerumque valde 

 convexo, margine dorsali convexo vel truncato, glabro ; membrana 

 firma, subcrassa et lamellosa ; ad medium marginis dorsalis vel 

 subdorsalis seta gracillima plus minusve regulariter dichotome 

 ramosa prseditae. Diam. cell. 18-36 (plerumque 19-22) [x ; long, 

 set. 60-90 fx. (Fig. 4.) 



Hah. In Sphagnum-hog, Glyder Fach, N. Wales. (May, 

 1911.) 



This Alga was observed among the leaves of submerged 

 Sphagnum in some boggy pools on the southern slopes of Glyder 

 Fach. 



DicranochcBte is the only genus of setigerous Green Algae in 

 which the bristles are branched. The dichotomous nature of this 

 branching is also very characteristic. Up to the present the genus 



