34 H. et J. Groves : 



• 42 mm. Oogouia pq. aggregata. Coroniila brevis. Oospora -o — 



• 47 mm. longa, -8 — 36 mm. lata, interdum tam lata (|nam longa. 

 Membrana grauiilata. Monoica. 



Hab. in Sto. Domingo in Valle nuevo prope Constanza, alt. 

 2100 m., Juu. 1910: H. von Türckbeim n. ;3405, pro parte. 



Distributio: America sept: Columbia britann., Civil, unitae 

 occident, Mexico; America anstr.: Peru, Bolivia, Chili, Argentiua, 

 Uruguay, Brasilia. 



A reraarkable species very distinct in appearance owing to the rays 

 being usually much swollen. It is the only known representative of Bkaitn's 

 section heterophyllae of the division MonartJirodadjjlae. Its discovery in the 

 West Indies is the more interesting as in North America it occurs piünci- 

 pally near the Western side and Dr. Allen refers to it as a typically 

 Pacific Coast species. 



6. Nitella axillaris A. Braun in 3Ioiiatsb. Berl. Akad. 1858 p. 3 50, 

 Fraijwente t. I f. 35—38; Nordstcdt in Hedwigia 1888 jj. 182 ef 194, 

 in Act. Univ. Limd. XXV (1889) De Alcjis et Charcic. p. 9. 



Statura mediocris. Caulis pq. crassus. Raniuli verticilloruni steri- 

 lium semel furcati, radiis secundariis 2 — 4, bicellularibus brevissimis 

 et inconspicuis. Verticilli fertiles in capitulis minutis congestis, axil- 

 lares paene sessiles. Ramuli fertiles 7 — 8 brevissimi pq. 2plo furcati; 

 radii ad furcam primam 4 — 5, quorum 2 — 3 simplices, 1 — 2 in 3 — 4 

 radiis bicellularibus iterum furcati, cellulis ultimis er. -1 mm. longis, 

 ad basin •04 mm. latis. Antheridia et oogonia ad furcam primam posita. 

 Antheridia diametro er. ■27 mm. Oogonia pq. solitaria. Coronuhi 

 parva. Oospora brunnea paulo complauata, -29 — 34 mm. longa, 



• 26 — 3 mm. lata, 6— 7 liras exliibens, membrana reticulata. Monoica. 



Hab. in Cuba: in Caiiadas ad viam inter Mayari et Cuba sept., 

 10. Aug. 1865: C. Wright, Santiago de las Vegas prov. Habana, 28. Jul. 

 1904: Wilson n. 440; Portorico prope Manati in paludosis, 9. April. 

 1887: P. Sintenis n. 6618. 



Distributio: Asia: Java; America sept: Mexico; America 

 ccntr.: Guatemala; America austr. : Venezuela, Brasilia. 



N. axillaris resembles the European N'. translucens. The lurni froni 

 Portorico and onc of Wkight's Cuban specimens are very mucli smaller and 

 more slender the branchlets being only about 8 mm. long. 



7. Nitella teiiuissima Kuetzing Ph/jc. Gen. (1843) p. 319, Tab. 

 Phijc. (1857) VII. i. 34 f. 2; Braun Fragmente p. 62; Nordstedt in. 

 Hedwigia 1888 p. 183. — Chara tenuissima Desvanx Journ. Bot. II 

 (1809) y. 313. — X. bijssoides Braun in Hook. Journ. Bot. 1849 p. 294. 



Statura parva. Caulis tenuissimus, pq. parum ramosus, inter- 

 nodiis longis. Verticilli condensati, paene giobosi. Ramuli verticil- 



