232 ANNALS OF SCOTTISH NATURAL HISTORY 



ALISMACE^E. 



Alisma ranunculoides, Z., var. zosterifolium, Fr., 96. 

 Butomus umbellatus, Z., 937. 



NAIADACE^E. 



Potamogeton natans, Z., var. prolixus, Koch., 89, 93. 



P. polygonifolius, Pour., var. angustifolius, Fr., 88, 92, 98, 108. 



var. pseudo-fluitans, Syme, 83. 

 P. coloratus, Hornem., 98 confirmed, 103. 

 P. heterophyllus, Schreb., 99. 

 P. nitens, Web., 101, 103. 

 P. lucens, L., 74, 76, 77. 

 P. angustifolius, PresL, 72 ?, 84, 85, 104. 

 P. upsaliensis, Fisch. (= angustifolius x ? perfoliatus), 90. 

 P. prselongus, Wnlf., 79. 



P. perfoliatus, L., var. lanceolatus, Blytt, 80, (not 86). 

 P. crispus x perfoliatus ( = undulatus, Wolfgang), 86. 

 P. crispus x obtusifolius ( = Bennettii, A. Fryer}, 86. 

 P. densus, L., 72 ?, 73 ?. 

 P. zostercefolius, Schiim., 75 ?. 

 P. obtusifolius, Mert. and Koch., 76, 84, 93. 

 P. Friesii, Riipr., 79 confirmed. 

 P. pusillus, L., var. tenuissimus, Koch., 72, 96. 

 P. pectinatus, L., 99, 101, 108 ?. 

 P. interruptus, Kit., 74. 

 P. filiformis, Nolte, 93, 95. 

 Ruppia spiralis, Hartm., 73 ?. 

 R. rostellata, Koch., 106; var. nana, Boswell, 101. 

 Zannichellia palustris, Z., aggr., 72, 74, 85 ?, 90, 93, 97, 101, 103, 



I 10, 112. 



Zostera marina, Z., 108 ; var. angustifolia, Hornem., 101, 106, 108, 



I 10. 



Z. nana, Roth., 82, 85, 101. 



CYPERACE/E. 



Eleocharis acicularis, R. Br., 97. 



E. uniglumis, Reichb., 84. 



Scirpus pauciflorus, Light/., 93, 94. 



S. Tabernjemontani, GmeL, 109 ?, no. 



S. Caricis, Retz., 74. 



S. rufus, Sc/irad., var. bifolius, Wallr., is rather frequent growing 



with the type. 



Eriophorum vaginatum, Z., 78, i.e. in all the vice-counties. 

 Schoenus nigricans, Z., var. nanus, Lange, 108. 



