Characeae, 33 
Hab. in Cuba 1865: C. Wright n. 3920, in stagnis Las Tunas ad 
Puerto Principe: C. Wright; Portorico, prope Fajardo in flumine ad 
montes versus, 21. April 1885: P. Sintenisn. 1059 pro parte; Martinique 
ad Port de France, 1860: Jardin (Hb. Lenormand); Trinidad, Perseve- 
rance Estate ad Cedros, Jan. 1895: T. B. Blow. 
Distributio: Asia: India, Ceylon, Straits Settlements, Japonia, 
Philippinae, Moluccae, Java. Africa: Sudan, Mauritius, Bourbon. 
America sept.: Illinois, Pennsylvania, New York, S. Carolina, Texas; 
America centr.: Panama; America austr.: Brasilia. 
The West Indian form of this variable and widely distributed species 
comes under Braun’s variety subglomerala, which is characterised by the 
aggregated fruits and by the ultimate rays of the branchlets not being much 
abbreviated. 
4. Nitella ®ollmeriana A. Braun @n Monatsb. Berl. Akad. 1858 
P.355 et Fragmente (1882) 1.1 f. 27—29. 
Statura paulo minor. Caulis tenuisculus. Ramuli verticillorum 
Pg. 8, semel furcati, sed propter radios secundarios pq. brevissimos 
vulgo per speeiem simplices. Radii secundarii unicellulares, paene a 
basi fastigiati, acuti. Vertieilli fertiles super ramis brevibus siti, 
ramulis pq. brevissimis capitula densa nonnunquam interrupta et spici- 
formia conformantes. Antheridia diametro -24—-32 mm. Oogonia 
Solitaria vel geminata. Oospora brunnea multo complanata, -24— 
3 mm. longa, -22— -27 mm. lata, 6—7 liras exhibens, membrana tenui 
prominentiis parvis sed magnitudine inaequalibus conspersa. Monoica. 
Hab. in Jamaica prope Charlton, alt. 1000 ft., 24. Nov. 1896: 
W. Harris n. 6706 pro parte; Haiti in Petite Riviöre d’Artibonite, Jul. 
1897: L. Picarda n. 1656 (Hb. Krug et Urban). 
Distributio: America austr.: Venezuela. 
Closely allied to N. acuminata, of which it should perhaps be regarded 
a8 a subspecies. The Jamaican plant is a small and slender form and the 
minimum measurements given above apply to it. Pıcarpa’s plant from Haiti 
has the secondary rays of the sterile branchlets somewhat elongated. 
5. Nitella elavata Kuetz. Spee. Alg. (1849) p. 518, Tab. Phye. 
VI (1857) 1.81 f.1; braun Fragmente (1882) p.42 t.I f.33—4 (var. 
inflata); Speggaxini Characeae Platenses (1893) p. 3; Allen Charae. 
Americ. part II fasc. II (1894) p.12 et tab. 
Statura mediocris vel nana. Caulis erassus.- Ramuli verticillorum 
inter se dissimiles, primarii (fertiles) 6—8 semel furcati, radiis secun- 
dariis 3—5 unicellularibus, secundarii (steriles) breviores simplices 
ünicellulares, infra primarios et eisdem alternantes sed pq. pauciores. 
Radii omnes secundarii praesertim valde crassi, secundarii interdum 
Paene globosi, acuminati vel mucronati. Antheridium diametro -3— 
Urban, Symb. ant. VI. 3 
