42 H. et J. Groves: 
et subglabra Kuetx. Tab. Phye. VII (1857) 1.57, f.1 et 1.76, f.2. — 
©. gymmopus var. Berteroi Braun Fragmente (1882) p. 195; Nordstedt 
in Hedwiyia 1888 p. 195 et in Act. Univ. Lund. XXV (1889) p. 40. 
Spine-cells short rarely more than half the diameter of the 
stem. Branchlets usually 11—13, with 9—12 segments, ultimate 
1—3 ecorticate. Two anterior pairs of bract-cells about equalling the‘ 
oogonium, those at the lowest node more or less swollen. Oogonia 
not produced at the first node. 
6. forma conjungens. — C. polyphylla var. conjungens Braun 
Monatsb. Berl. Akad. 1858 p. 363. — Ü. gymnopus var. conjungens 
Braun Fragmente (1882) p. 194. — (0. conjungens Robinson l.c. p. 293. 
Intermediate between the preceding and following forms but has 
the bract-cells longer than in either, those at the lowest node more 
or less swollen. 
7. forma Michanxii. — C. polyphylla var. Michauxii Braun in 
Boston Journ. Nat. Hist. vol. V (1845) p. 264. — (. haitensis Turpin 
in Diet. Sci. Nat. (1826) Veg. Acot. t. 101. — C. Michauxiüi Kuetz. Tab. 
Phye. VII (1857) p. 31 t. 77 f. 2. — Ü. gymnopus var. Michauxü 
Braun Fragmente (1882) 9.195; Nordstedt in Hedwigia 1888 p.192. 
Plant large robust. Branchlets numerous (11—14) with usually 
10—12 segments, the last (or last 2) ecorticate. Bract-cells short, 
usually the 2 anterior pairs only developed, the others papilliform. 
Oogonia not produced at the lowest node. 
Ss. forma Humboldtii. — (0. compressa Kunth in Humb. B. et 
K. Nov. Gen. I (1815) p. 38. — C. polyphylla var. Humboldtiana Braun 
in Boston Journ. Nat. Hist. vol, V (1845) p. 264. — (. polyphylla 
var. Humboldtii Kuetx. Sp. Alg. (1849) p. 522. — (©. gymnopus var. 
Humboldtü Braun Fragmente (1882) p.196; Nordstedt l.c. p.192, 195. 
Plant usually robust. Spine-cells often longer than the diameter 
of the stem. Branchlets usually 11—12, with 9—11 segments, of 
which the last 1 (rarely more) is ecorticate. Bract-cells whorled, 
anterior longer than, posterior half as long as, the oogonium. Oogonia 
not produced at the lowest node. 
9. forma eurassaviea. — Ü. gymnopus var. curassavica Braun 
Fragmente (1882) p. 198. 
Plant small. Spine-cells half to twice the diameter of the stem. 
Branchlets 9—12 with 7—11 segments, the basal segment varying 
from twice to 6 (or more) times as long as broad. Bract-cells whorled, 
anterior pair 1—1?/, as long, others gradually narrowing to the pos- 
terior !/, to !/, as long, as the oogonium. Oogonia often but not am 
produced at the lowest node.. 
