Characeae. 39 
Braun Fragmente (1882) 1. II f. 74 1. III f.75; Allen in Bull. Torrey 
Bot. Cl. vol. 27 (1900) p. 299 t. 12 et 13. 
Statura magna. Caulis pq. crassus, diplostiche corticatus, cellulis 
seriei primariae prominentibus. Aculei solitarii pq. longi et crassi, 
acuminati. Stipulodia uno ordine, singulis ramulis bina opposita, longa 
et crassa acuminata. Ramuli verticillorum S—10 ecorticati, segmentis 
4—-7, ultimis multo abbreviatis. Bracteae ad nodos fertiles 6, verti- 
cillatae, quarum illa quae oogonio opposita est caeteris multo brevior. 
Antheridia diametro er. 1 mm. Oogonia solitaria. Coronula connivens. 
Oospora subatra - 75— -8 mm.longa, -41— -48 mm. lata, liras cr. 10 ex- 
hibens. Dioica. | 
Hab. in Key West 1898: Collins, Holden et Setchell n. 1289; 
Cuba: C. Wright 1865 n. 3915 (Hb. Krug et Urban); Vieques (Crab 
Island): Hornbeck (ex hb. A. Braun). 
Distributio: America sept.: Mexico, Florida; America austr.: 
Brasilia. 
One of the largest and most distinet species of Chara. The Cuban 
plant is a remarkably stout form, with densely spinous stem, with the 
spine-cells often 4 to 5 times as long as the diameter of the stem. The 
plant from Crab Island is a much more slender and flexuous form with 
few spine-cells, which are quite short. Mr. C. B. Rosınsox in ‘Chareae of 
North America’ states that the striae on the oospore of C. Hornemanmüi 
are 5—7. We find on Wricur’s Cuban specimen about 10, which agrees 
with Braun’s description. 
14. Chara Hydropitys Reichenb. in Moessi. Handb. ed. 3 III 
(1834) p. 1670; Braun in Hooker’s Journ. Bot. 1849 p. 296. — 
C. Robbinsii Halsted in Proc. Boston Soc. Nat. Hist. 20 (1879) p. 183. 
— C. nudipes Wallm. in Kongl. Vet. Akad. Handl. vol. 40 (1854) 
P- 293. — C. Schneckü, CO. mexicana et (. Liebmanni Robinson in 
Bull. New York Bot. Gard. vol. 4 (1906) pp. 271 et 274. 
Statura parva. Caulis tenuis, diplo- vel triplostiche corticatus, 
cellulis seriei eujusque fere aeque prominentibus. Aculei sparsi, soli- 
tarii, tenues diametrum caulis pq. non aequantes. Stipulodia uno 
ordine, singulis ramulis bina opposita valde evoluta. Ramuli verti- 
cillorum 8—13 subrecti, segmentis 5—8 longitudine variantibus, in- 
fimo et ultimis 1—4 ecorticatis, caeteris diplostiche corticatis, rarius 
Omnibus ecorticatis. Bracteae 5—10 verticillatae longae. Antheridium 
diametro -2—.3 mm. Oogonia ovoidea vel oblongo-ovoidea ad nodum 
primum et 2—3 sequentes posita. Coronula connivens vel patens. 
Oospora nigra -34— -53 mm. longa, -19— 38 mm. lata, 10—13 liras 
exhibens. Monoica. ; 
‘Hab. in Cuba: C. Wright n. 3917. 
