Isoetaceae. 481 



Cormo ovato, trisulcato, radicibus tomentosis inferne vestito; phyl- 

 lopodiis coriaceis, nigris, in cornua bina lineari-subulata, adjecto interdum 

 dente tertio intermedio, abeuntibus vestito; foliis filiformibus, 3 — 8 cm, 

 longis, patentibus; macrosporis globosis, albis, tenuiter costatis et tuber- 

 culatis; microsporis fuscis, densissime aculeis subtruncatis vestitis. 



(j. siibinermis Bois. fl. or. V. p. 748. — Cormus citius desqua- 

 matus; phyllopodiorum cornua breviora. — Exsicc: N. v. 



^. phrygia Bois. fl. or. V. p. 748. — /. phrygia Haussk. symb 

 p. 72. — Phyllopodia in dentes breves triangulares abeuntia; macro 

 spora obsolete et parce tuberculata, fere laevia, costa transversa fere 

 obsoleta. — Exsicc: Haussk. it. gr. a. 1885; Heldr. it. IV. thessal. 

 a. 1885. 



In collibus iucultis, olivetis, saxosis, subhumidis, locis hyeme inun- 

 datis. Corcyra: pi'. Gasturi (Gelmi); Creta: pr. Kissamos (Heldr.); — 

 /S. Peloponnesus et Zacynthus (Letourn.); — y. Thessalia: in oropedio 

 Neuropolis in Pindo dolopico (Haussk.). — Mart. Jul. 2}.. 



2. Sectio. Palustres A. Br. in Gr. et Godr. fl. fr. III. p. 650. 



— Phyllopodia nulhi; foliorum lacunae amplae; folia stomatibus in- 

 structa; velum saepius incompletum. Plantae submersae vel aestate 

 plus minus exsiccatae. 



2. I. setacea Del. in mem. hist. nat. XIV. p. 20 t. 6 et 7 ; 

 Haussk. in Mittheil. bot. Ver. Thiiring. 1886 V. p. 62, symb. p. 72. 

 ; — Exsicc: Heldr. herb. norm. n. 899. 



Cormo ovato, bisulcato, radicibus glabrescentibus inferne vestito; 

 foliis tenuibus, flexilibus, 20 — 40 cm. longis; velo subnullo; macro- 

 sporis globosis, albis, tenuiter costatis et praesertim facie basali tuber- 

 culatis ; microsporis fuscis, alatis, ala longitudinaliter striata. 



In uliginosis oropedii Neuropoh's in Pindo dolopico (Heldr.). — 

 Maio, Jul. 21-. 



3. Sectio. Aquaticae A. Br. in Gr. et Godr. fl. fr. III. p. 650. 



— Phyllopodia nulla; foliorum kcunae amplae; stomata nulla; velum 

 incompletum. Plantae submersae. 



3. I. Heldreichii Wettst. in z. b. G. 1886 p. 239; Haussk. in 

 Mittheil. thiir. bot. Ver. Thiiring. 1886 V. p. 62, symb. p. 72. — 

 Exsicc: Heldr. it. IV. thessal. a. 1885. 



Cormo ovato, trisulcato, radicibus glabrescentibus inferne vestito; 

 foliis tenuibus, flexilibus, 10—25 cm. longis; velo subnullo; macrosporis 

 globosis, albo-flavescentibus, costatis et tuberculatis ; microsporis fuscis, 

 spinulosis. 



In stagnis. Thessalia: in palude pr. Palaeokastron (Heldr.). — 

 Jun. Jul. 21. 



V. Haliicsy, Flora Gr.ieca 111. 31 



