40 H. et J. Groves: 
Distributio: Africa sept., Asia austr., America sept. et austr. 
The West Indian plant is a fairly robust form. 
15. Chara sejuneta A. Braun @n Boston Journ. Nat. Hist. vol. V 
(1845) p. 264. — CO. sejuneta et Ü. compacta Robinson in Bull. N. Y. 
Bot. Gard. IV (1906) p. 296 et 297. 
Statura variabilis. Caulis triplostiche corticatus, cellulis seriei 
primariae et secundariae aequaliter prominentibus. Aculei solitarii breves, 
tenues, acuminati. Stipulodia seriei utriusqgue evoluta, valde acu- 
minata. Ramuli verticillorum 10 —12, articulis 10—15, infimo ab- 
breviato ecorticato, caeteris triplostiche corticatis, ultimis 1—2 ecorti- 
catis exceptis. Bracteae 6 —8. Oogonia et antheridia ad nodos diversos 
posita. Antheridium diametro cr. -42 mm. Oogonium ovoideum. 
Coronula variabilis, connivens vel patula. Oospora atra -5—-9 mm. 
longa, -36—-6 mm. crassa, 11—15 liras exhibens. Monoica. 
Hab. in Portorico prope Utuado in rivulo Limon, 21. Mart. 1887: 
Sintenis n. 6499, (n. 6595, planta sterilis ejusdem distrietus, a el. Nord- 
stedt in Hedwigia 1888 p. 195 ad Ch. gymnopus var. Berteroi ducta, 
 probabiliter ad hanc speciem pertinet); Guadeloupe: l’Herminier in 
hb. Braun, Etang St. Frangois Sept. 1897: Pöre Duss n. 3936 ex p;; 
Barbados: R. V. Sherring (herb. Kew.). 
Distributio: America sept.: Civit. unitae, Mexico; America 
austr.: Brasilia, Columbia. | 
Very closely allied to C. zeylaniea of which perhaps it should be 
regarded as a subspecies. 
16. Chara zeylanica Willdenow @n Mem. Acad. Berol. pro anno 
. 1803 (1805) p. 86 1.II f. 1. — C. foliolosa Willd. 1. c. p.86 t. I f. 2. 
— (. polyphylla Braun in Regensb. Bot. Zeit. 1835 I p. 70 (sens. lat.). 
— C. gymnopus Braun in Monatsb. Berl. Akad. 1867 p. 870 (sens. 
lat.); Nordstedt in Hedwigia 1888 p. 192 et 194. 
Statura variabilis. Caulis triplostiche corticatus, cellulis seriei 
primariae et secundariae aeque prominentibus, aculeis solitariis. Stipu- 
lodia superiora et inferiora valde evoluta. Ramuli verticillorum 8—14 
(pg. 11— 13), artieuli 7—14, quorum infimus et ultimi 1—4 ecorti- 
cati, caeteri pq. triplostiche corticati, raro omnes ecorticati. Bracteae 
8—11 vertieillatae, vel 4—6 anteriores evolutae, posteriores rudimen- 
tariae. Antheridia et oogonia ad nodos ramulorum eosdem una sita. 
Antheridium diametro -31—-55 mm. Coronula variabilis. Oospora 
ovoidea vel fere cylindrica -48—-75 mm. longa, -23— -54 mm. crassa, 
10—15 strias exhibens. Monoica. | 
This characteristice tropical species is the commonest and most widely 
distributed in the West Indies. It is extremely variable and has in this 
respect been aptly compared by the late Ankzxanper Braun to C. fragllis. 
