FOR ARRANGEMENT IN THE HERBARIUM. 



xliii 



Cystoclonium;* purpurascens. 

 CALLOPiiTLLiS;t laclniata. 

 Kalltmenia; reniformis. 



GiGAiiTiNA; pistillata, acicularis, Teedii, mamillosa. 

 CiiONDRUS; crispus. 

 Haltmenia; ligulata. 



CnTLOCLADiA;J ckvellosa, rosea, articulata. 



Dumontia; filiformis. 



Catenella; opuntia. 



Furcellaria; fastigiata. 



Gratelotjpia; filicina. 



ScnizTMENiA;§ Dubyi, edulis. 



GtLOIosiphonia; capillaris. 



* Long known as Hypnea purpuras ce7is . 



f Formerly Bhodymenia laciniata (Fig. 179). 



X Formerly Chrysyrnenia clavellosa (Fig. 136), and C. rosea (Figs. 141, 

 142). 



§ Formerly Kallymenia Buhyi (Fig. 213), and Iridoia edulis (Fig. 214). 



Family 19. — CERAMIACEiE. — Soft and thread-liJce ; rarely rather rigid; 



jointed; transparent ; or wholly or partly 

 coated with colour-cells. 



1. Masses of spores in external, closed cases 



(capsules), in pairs; or rarely naked. 



2. Tetraspores, external, superficial^ or half- 



immersed. 



Microcladia; glandulosa. 



Ceeamium; rubrum, botryocarpum, decurrens, Deslongchampsii, diapbanum, 

 gracillimum, strictum, nodosum, fastigiatum, flabelligerum, ecbionotum, 

 acanthonotum, ciliatum. 



DuDRESis^AiA; coccinea. 



CRorANiA; attenuata. 



Ptilota; plumosa, elegans. 



Halttrus;* equisetifolius, simpliclfilum. 



Griefithsia; barbata, Devoniensis, corallina, secundiflora, setacea. 

 CoRTNOSPORA;t pedicellata. 

 Seirospora;!}: Griffitbsiana. 



CALLiTHHAMNTOisr ; plumula, cruciatum, floccosum, Turneri, barbatum, pluma, 

 arbuscula, Brodisei, tetragonum, bracbiatum, tetricum, Hookeri, roseum, 

 byssoideum, polyspermum, purpurascens, fasciculatum, Borreri, affine, 

 tripinnatum, gracillimum, thuyoideum, corymbosum, spongiosum (or 

 granulatum), Rothii, floridulum, mesocarpum, sparsum, Daviesii, virga- 

 tulum. 



* Formerly Griffithsia equisetifoUa (Fig. 244), and G. simplicifilum (Fig. 



247). 



f Formerly Gallithamnion pedicellatum (Fig. 283). 



J The bead-like fruit of this plant is incorrectly called tetraspores under 

 Fig. 248. The true tetraspores are " scattered and pedunculate," as 

 described by Areschoug, and such have been lately observed by Dr. 

 Arnott on a specimen from Jersey. 



