LYNGBY^E. 263 



Symploca Ralfsiana, Kutz. Tab. Phi/c. i, t. 74, /. 4. 



Steel blue or olive becoming blackish, fascicles as much as 

 an inch high, densely aggregated, often coalescing, subuliform, 

 straight, trichomes pale blue-green or steel blue, densely 

 agglutinate, distinctly articulated, somewhat beaded about the 

 apices, joints equal or a little longer than broad, cell-contents 

 granular, sheaths broad, pellucid, homogenous. 



SIZE. Trichomes '0035-'004 mm. diam. 



Kabh. Alg. Eur. ii., 157. 



Oscillaria Friesii, Harv. Eng. Fl. v., 373. Harv. Man. 

 162. Hass. Alg. p. 259. Mack. Hib. 238. 



Oscillatoria Bangii, Carm. Grrev. Fl. Ed. 303. 



Scytonema Bangii, Lyngb. Hydro. Dan. t. 28. 



Over running mosses in shady sub-alpine situation. 



" Stratum 2-3 inches broad, bright aernginous green; Filaments 

 closely interwoven into erect elongated tooth-like fascicles, an inch or 

 more in height, pale green under the microscope, annnlated within, with 

 a broad limb or border, well marked by its erect spinulose habit." 

 Harvey. 







Plate GUI. Jig. 1. a, portion as seen with a pocket lens. 6, trichomes 

 X 410. 



GENUS 106. PLECTONEMA. Thur. (1875.) 



Filaments branched, ramifications produced by the branching 

 of the trichome outside of the sheath, very irregular, and often 

 germinate as in Scytonema. 



Flectonema mirabile, Thur. Ann. Sci. Nat. (1875) 377. 



Forming floccose tufts, blue-green, now and then turning 

 brownish, trichomes with pseudo-branches usually in pairs and 

 parallel ; joints shorter than their diameter, granular sheath 

 narrow, colourless or yellowish, quite smooth. 



SIZE. Filaments '021 mm. with sheath. 



Born, and Thuret, Notes Alg. ii., p. 135, t. 33. 



Conferva mirabilis, Dillw. Conf. t. 96. 



Calothrix BreUssonii, Kutz. Tab. Phyc. ii., t. 30, f. 4. 



Calothrix atrovirens, Harv. Man. 159. 



Calothrix mirabilis, Ag. Syst. 72. Rahh. Alg. Eur. ii.,271. 

 Hass. Alg. 243, t. 69, f. 1. Eng. Fl. v., 369. Harv. Man. 159. 



Elisa mirabilis, Gray. Arr. i., 283. 



In small streams. 







Plate CIV fig. 1. a, portion of trichome X 330. &, portion with 

 a single branch X 330 after Thuret. 



