8 9 
the British Marine Algae . 
RHODOPHYCEAE (continued). 
Cohort III. — GIGARTININAE. 
Order I.— gigartinaceae. 
Tribe I.— Gigartineae. 
Chondrus J. Ag. 
Ch. crispus, Stackh. 1-14. 
f. virens, Turn, 
f. stellata, Turn, 
f. aequalis, Turn, 
f. filiformis, Turn, 
f. patens, Turn, 
f. sarniensis, Turn. 
Gigartina Stackh. 
G. Teedii, Lamx. 9 ! 
G. acicularis, Lamx. 9 ! 11. 13, 
G. pistillata, Stackh. 9 ! 
G. mamillosa, J. Ag. 1-14. 
f. linearis, Turn, 
f. prolifera, Turn, 
f. echinata, Turn, 
f. incurvata, Turn. 
Tribe II. — Tylocarpeae. 
Phyllophora Grev. 
Ph. rubens, Grev. 1-4 ! 9 ! 
Ph. Brodiaei, J. Ag. 1.4! 5 ! 7 ! 12. 
f. angustissima, C. Ag. 1 ! 
Ph. Traillii, Holm, et Batt. 4 ! 5. 9 ! 
Ph. palmettoides, J. Ag. 9 ! 
Ph. membranifolia, J. Ag. 1-14. 
Stenogramme Harv. 
S. interrupta, Mont. 9 ! 10. 14! 
Gymnogongrus Mart. 
G. Griffithsiae, Mart. 1. 2. 9 ! 10. 12. 
G. norvegicus, J. Ag. ( Chondrus norvegicus , Phyc. Brit,). 
1. 2. 6 ! 7. 9 ! 
Ahnfeltia Fries. 
A. plicata, Fries ( Gymnogongrus plicatus , Phyc. Brit,). 
1-14, 
