ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
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Eucoideae of Scandinavia.* — Herr F. E. Kjellman proposes the 
following new classification of the FucoidcaB : — 
Cl. I. Cyclosporcse. 
Fam. 1, Fucacese (Cystoseireae, Ilimanthalieae, Fuceae). 
Cl. II. Pliaeosporeae. 
Order 1. Zoogonieae. 
Suborder 1. Gynocratas. 
Fam. 1. Cutleriaceae. 
Suborder 2. Isogonicae. 
Fam. 1. Lithodermataceae, 2. Laminariaceae, 3. Spo- 
rochnaceae, 4. Ealfsiaceae, 5. Spermatochnaceae, 
6. StilophoraceaB, 7. Chordariaceae, 8. Elachistaceae, 
9. MyriotrichiaeeaB, 10. Desmarestiaceae, 11. Dic- 
tyosiphonaceae, 12. Striariaceae, 13. Encoeliaceae, 
14. Sphacelariaceae, 15. Ectocarpaceae. 
Order 2. Acinetae. 
Fam. 1. Tilopterideae. 
Two new genera are also proposed : — Phseosphserium founded on LinMa 
punctiformis , and Physematoplea on Scytosiphon attenuatus. 
Sphacelariaceae. f — Herr J. Eeinke gives a monograph of the species 
hitherto known of this family of PhaBOsporeae, with descriptions of four 
new genera. He now regards them as a distinct family from the 
Ectocarpaceas, the genus Isthmoplea belonging to the latter, while 
Lithoderma is the genus of Ectocarpaceas which exhibits the nearest 
affinity to the Sphacelariaceas, and is perhaps their point of departure. 
A histological character by which the Sphacelariaceae are distinguished 
from Lithoderma , Ectocarpus , Isthmoplea , and all other Phaeosporeae, is the 
black colour imparted to them by eau de Javelle. The growth in length 
of the axes is effected by the lengthening and transverse septation of 
the apical cell. 
The family consists of ten genera, viz. Battersia gen. n. (1 sp.), 
Sphacella gen. n. (1 sp.), Sphacelaria (12 sp.), Chsetopteris (1 sp.), Clado- 
stephus (3 sp.), Halopteris (1 sp.), Stypocaulon (3 sp.), Phloiocaulon 
(2 sp.), Anisocladus gen. n. (1 sp.), and Ptilopogon gen. n. (1 sp.). 
Battersia forms a distinct section of the family, distinguished by its 
crustaceous habit, the fertile branches springing directly from the 
relatively very large basal disc, and these branches ending in unilocular 
sporanges. The only species, Battersia mirahilis, is at present known 
only from Berwick. Sphacella suhtilissima, from the Balearic Islands, 
forms small dense cushions on Carpomitra, on which it is parasitic ; 
on the erect slightly branched uniseriate branches are numerous 
unilocular sporanges. In Anisocladus , from South Africa and New 
Zealand, the normal branches are always barren, and the fructification is 
confined to short branched adventitious branches, in the axils of which 
are both plurilocular and unilocular sporanges. Ptilopogon , from New 
Zealand, also has both kinds of sporange, which are found only in the 
axils of the branches of tufted adventitious shoots. The plant is of 
* ‘ Handbok i Skand. Hafsalgflora,’ Th. 1, Fucoideae, StockhoLn, 1890, 103 pp. 
See Bot. Centralbl., xliv. (1890) p. 148. 
f Ber. Deutsch. Bot. Gesell., viii. (1890) pp. 201-15 (3 figs.). 
1891. 
Q 
