Characeae. 39 



Braun Fragmente (1882) t. II f. 74 t. III f. 75; Allen in Bull. Torrr/j 

 BoL Cl. vol. 27 (1900) p. 299 t. 12 et 13. 



Statura magna. Caiilis pq. crassus, diplostiche corticatus, cellulis 

 seriei primariae prominentibiis. Aculei solitarii pq. longi et crassi, 

 acuminati. Stipulodia uno ordine, singulis ramulis bina opposita, longa 

 et crassa acuniinata. Ramuli verticillorum 8 — 10 ecorticati, segmentis 

 4 — 7, ultimis multo abbreviatis. Bracteae ad nodos fertiles 6, verd- 

 cillatae, quarum illa quae oogonio opposita est caeteris multo brevior. 

 Antheridia diametro er. 1 mm. Oogonia solitaria. Coroniila connivens. 

 Oospora subatra -75 — 8 mm. longa, -41 — 48 mm. lata, liras er. 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 (Grab 

 Island): Hornbeck (ex hb. A. Braun). 



Distributio: America sept: Mexico, Florida; America austr.: 



Brasilia. 



One of the largest and most distinct species of Ohara. The Cuban 

 j)lant is a reinarkably 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 Grab Island is a niuch more slender and flexuous form with 

 few spine-cells, which are quite short. Mr. G. B. Robinson in 'Ghareae of 

 North America' states that the Striae on the oospore of C. Iloruemantiii 

 are 5 — 7. "We find on Wright's Cuban specimen about 10, which agrees 

 with Braun's description. 



14. Cliara Hydropitys Reichenb. in Moessl. Handb. ed. 3 III 

 (1834) p. 1670; Braun in Hooker's Jonrn. Bot. 1849 p. 296. — 

 C. Robbinsii Halsted in Froe. Boston Soc. Xat. Hist. 20 (1879) p.l83. 

 — 0. nudipes Wallm. in Kongl. Vet. Äkad. Handl. vol. 40 (1854) 

 p. 293. — C. Sclineckii, C. mexicana et C. Liebmanni Robinson in 

 Bull. New York Bot. Uard. vol. 4 (1906) pp. 271 et 274. 



Statura parva. Caulis teniiis, diplo- vel triplostiche corticatus, 

 cellulis seriei cujusque 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 oblonge -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 u. 3917. 



