FOR ARRANGEMENT IN THE HERBARIUM. xliii 
^Hormotrichum ; collabens, bangioides, Younganuni^ Carmichaelii, speciosum, flac- 
cum, Cutlerige. 
Conferva ; arenicola, arenosa, littorea, Limim, sutoria, tortnosa, implexa, Mela- 
gonium, aerea, clandestina, 
* Formerly C. collabens (Fig. 397), Conferva bangioides (Fig. 328), C. Youngana (Fig. 
337), Lyngbya Carmichaelii (Fig. 368), L. speciosa (Fig. 369), L. Cutlerice (Y\g. 370,) 
and L.Jlacca (Fig. 359), 
Family 23.-OSCILLAEIACE.® , — Solid masses or soft tufts of tubular threads, each 
thread containing a row of narrow cylin- 
drical colour-cells. 
Zoospores internal. 
Rivularia ; plicata, atra, nitida. 
Calothrix ; confervicola, luteola, scopulorum, fasciculata, paunosa, semiplena, hyd~ 
noides, coespitula. 
ScHizoTHRix; Creswellii. 
ScHizosiPHON ; Warreniae. 
Lyngbya 5 majuscula, ferruginea. 
OsciLLATORiA ; littoralis, spiralis, nigro-viridis, subuliformis, insignis. 
Microcoleus ; anguiformis. 
Spirulina ; tenuissima. 
Family 24.-H0ST0CHmE^ . — Soft tubular threads lying in gelatine, forming filmy 
patches ; each thread containing a row of co- 
lour-cells, interrupted here and there by one of 
different character (heterocyst). 
Zoospores internal. 
Spermosira; littorea, Harveyana. 
Sph^rozyga ; Carmicliaeli, Tliwaitesii, Broomei, Berkeleyana. 
Monormia ; intricata. 
Family 25 -PALMELLAOE^ , — Soft, gelatinous, tubular threads, each containing a 
row of colour -cells. 
Zoospores internal; the colouring -matter (endo- 
diroiiie) dividing into rays. 
Hormospora ; ramosa. 
