ALGJ3 OF WEST IRELAND. 215 



Plate XXII. {continued). 



Fig. 7. Arthrodesmus elegans, West. 400/1. 



8. ,, bijidus, Breb., var. latodivergcns, West. 400/1. 



9- „ tenuissimm, Arch. 400/1. 



10. „ glaucescens, Wittr., forma convexa, West. 400/1. 



11. Staurastrum deject urn, Breb., var. inftatum, West. 400/1. 



12. „ comiculatum, Lund, var. spinigerum, West. 400/1. 



13. ,, curvatum, West. 400/1. 



14. „ jacuiiferum, West. 400/1. 



15. „ OMearii, Arch., var. minutum, West. 400/1. 

 16- „ cristatum, Arch., forma. 625/1. 



17. ,, oUgacanthum, Br6b. t var. incisum, West. 400/1. 



18- ,, polytrichum, Perty, forma. (500 1. 



Plate XXIII. 



Fig. 1. Staurastrum megaloyiotum, Norcl., forma ftord. 400/1. 



2. „ avicula, Breb., var. verrurosum, West. 400/1. 



3. ,, spongiosum, Breb., var. perbifidum, West. 400/1. 



4. „ subscabrum, Xord., forma scabrior, West. 400/1. 



5. „ t \raehyg on urn, West. 400/1. 

 *). ,, hibcrnicum, West. 400/1. 



7. ,, pygm&um, var. trilineatum, West. 400/1. 



8. „ subpiigmaum. West. 400/1. 



0. „ amotnum, Ililse, var. brasiliense, Boerg. 400/1. 



10. „ arcuatum, Xord., var. guifanense, West. 400/1. 



11. „ gracile, Kalfs, *bulbosum, West. 400/1. 



12. „ paradoxum, Meyen, forma parva, West. 400/1 



var. nodulosum, West. 4(H)/ 1 



>> ?» »♦ 



13. 



14. f9 nafator, We.^t. 400/1. 



15. „ Arckerii, West. 400/1. 



3* 



Plate XXIV. 



Fig. I. Staurastrum Pseudoscbaldi , Wille, *duacense, West. 400/1. 



anatinum, Cooke et Wills., var. truneatum y West. 400/1. 



3. „ „ „ „ *biradiatum, West. 400/1. 



4. „ arachnoides, West. 400/1. 



5. „ teliferum, Ealfs (cum zygosp.). 400/1. 

 ti. M M „ forma obtum, West. 400/J. 



7. Euustrum pectinatum, Brtb. (cum zygosp.). 400/1. 



8. Mesotcenium chlamgdosporum, DeBary (cum zygosp.). 400 1. 



9. Cosmarium plicatum, Reinsch, var. hibernicum, West. 400 1. 



10. n elegantissimum, Lund., forma minor, West. -4IHI/1. 



11. Arthrodesmus Incus, Ilass. (cum zyg« »sp.). 400/1. 



12. Vlcurotcenium tridentulum, nob., var. capitatum, West. 025/1. 



13. Euastrum scitum, West, a-c, 400/1 ; «', 025/1. 



14. Staurastrum minutissimum, Reinsch, var. constrictum, West. 625/1. 



15. Cosmarium obliquum, Nord., var. trigonum t West. 400/1. 



LINK. JOUBN. BOTANY, VOL. XXIX. B 



