Characeae. 37 
Distributio (exel. subsp. Glaziovüi): Asia: Ceylon, Straits Settle- 
ments, Java; America sept.: Canada, Civit. unitae; America centr.: 
Panama; America austr.: Guiana gall. et holland., Brasilia. 
Werisnr’s specimens from Cuba comprise three different forms, or states, 
one an almost black dense-growing plant about the size of N. mueronata, 
a second much larger but quite young brownish-green plant which Norp- 
stepr has referred to N. microcarpa subsp. megacarpa, but upon which in 
the absence of fruit we should prefer to reserve judgement. Both of these 
are under no. 3919. The third form, under no. 3921 (in company with 
N. tenuissima) is a more distinet plant which we think may be described 
as a variety, as follows: 
Var. Wrightii Groves (n. var... Verticilli heteromorphi, fertiles 
nonnulli in capitulis parvis paene globosis congesti. Ramuli vertieillorum 
6—5S bis vel ter furcati. Radii ad furcam primam 4—6, ad secundam 
3—5, quorum 1—3 nonnunquam in radios cr. 4 iterum furcati. Radii 
ultimi vix unquam abbreviati, cellula inferiore versus basin cellulae 
ultimae paulatim angustata, cellula ultima elongata angusta acuta. 
Antheridia et oogonia ad furcam primam et secundam, nonnunquam 
tertiam, posita. Oogonia solitaria aut geminata. Coronula abbreviata. 
Oospora er. -22—-25 mm. longa, -18—-2 mm. lata, -14 mm. crassa, 
liras 6 exhibens. 
Hab. in Cuba: C. Wright a. 1865 n. 3921, pro parte. 
A small plant, with the ultimate rays tapering, resembling in outline 
those of the most acuminate form of N. acuminata, and hardly ever shortened. 
11. Nitella hyalina Agardh Syst. Aly. (1824) p. 126. — Chara 
hyalina DC. Flor. Frang. V (1815) p. 247.— C. condensata et C. inter- 
rupta Ruprecht Symb. Hist. Pl. Ross. (1845) p. 78, 79 (fide Braun). 
Statura parviuscula. Internodia longitudinem ramulorum bis— 
quater excedentes. Ramuli vertieillorum inter se dissimiles, primarii 
majores pq. 8, secundarii minores er. 16, duobus ordinibus, quorum 
alter supra alterum infra majores instructus. Ramuli primarii 2—3-plo 
furcati, radiis primariis totam longitudinem ramulorum 1/,—3/, aequan- 
tibus. Radii ad furcam primam 7—10 (quorum 1—3 pq. simplices), 
ad furcam secundam 4—7, quorum 0—2 in radiis 4—5 denuo fur- 
cati. Radii ultimi 2-cellulares, cellula inferiore versus basin cellulae 
ultimae sensim angustata, cellula ultima parva angusta acuta. Ramuli 
Secundarii quam primarii minores et minus furcati. Antheridia et 
oogonia solitaria, ad furcas secundas et tertias (rarius primas) ramu- 
lorum primariorum, nonnunquam quoque ad ramulos secundarios posita. 
Antheridia diametro -25—.41 mm. Coronula -075 mm. lata, -045 
alta. Oospora cinereo-brunnea manifeste complanata, -25— -4 mm. 
longa, -21— -32 mm. lata, S—9 liras evidentes sed (apice excepto) 
non. prominentes exhibens, membrana leviter granulata. Monoica. 
