globose; veil vei-y narrow. Maorospores middle-sized, marked
with small, regular, rarely confluent papill®. Microspores minutely
papillose or nearly smooth. ^
B o U m t '; S v e ? d in m e . “ *®™
R J ^‘a Bi-- in Berl. Monatber. 1868, 589. 1. himutior
w 1 •; ’ f r /'■ 1862, 722, ex parte.— Eootstock 2-lobed.
Habit o f / , lacustns. Leaves 4 -6 in. long, pale green, diaphanous,
narrowed gradually to the point, without stomata or accessory
bast-bundles. Sporange small, globose ; veil complete. Maoro-
confluenr numerous tubercles, which are sometimes
™ the South Esk Eiver, C. S tu a r t! I . Hookeri A Br.
wft'h same station, seems to be another form of the same species,
w ith taU e ^ ^ s tf n c fL b e T c L ^ *'!’■ - - ^ ^ p o r e s
9. I. L echleki Metten. F il. Lechler, ii. 3 6 ; A. Br. in. Verb
Branden 1862, 35.— Eootstock 2-lobed. Leaves 1 2 -2 0 , stouter
green, flexible diaphanous, tapering gradually to an acute point,
without stomata or accessory bast-buudles, the broad membranous
LmVm iite dilated base running half-way up the
amma. Sporange globose; veil complete. Macrospores middle-
sized, smooth. Microspores minutely tubercled.
Hab. Cordilleras of Peru, Lechler, 1937! L . soda A. Br Z e 3fi w»«
afteriyards regarded by him as a form of this species. I Karstenli A Br
Granadk^^dm^ o n lv ? '’' u “ '"*^ o k .enanacla, clitters only by its muricated microspores. iu the Andes of New
Group 2.— StihaquaticcB.
10. L Bolandem F ng e lm . in Amer. Nat. 1876, 676. / . cali-
fornica. F n g e lm . MSS. ohm.— Eootstock deeply 2-lobed. Habit of
/ . echinospora Leaves 5 -2 0 , 2 -4 J in. long, 4 - 4 Hn. diam
b uW h lm t** ‘ii^Pki^nous, bright green, with stomata!
but without accessory bast-bundles. Sporange mostly oblon"
unspotted covered J - J by the veil. MWospor es sm lll finely
granulated. Microspores more or less papillose or spinulos^.
10 OOo'n S n d °P iu ponds aud shallow lakes, a t 5 0 0 0 -
T?;' ’ ®ngelm. in Gray Man. edit. v.
676. Eootstock 2-lobed. Habit of I. «oAiwospora. Leaves 10-30
3 -4 m. long i h n . diam. at the middle, bright green diaphanous’
S buddies s ' " “ *’ *"*'* ",/®"i "but Without a o c e ' o ;
1? Sporange small, globose, sometimes spotted; veil
paitial. Maorospores middle-sized, the upper half covered with
paia lle l anastomosing ndg e s, the lower h a lf reticulated Micro
spores nearly or quite smooth. coicuiatea. iviicroman
! H
ab. Ponds near Boston, asssoeiated with forms of echinospora, Tncker-
12. I. SAOOHAEATA F ng e lm . in Gray Man. edit. v. 676. —
Eootstock 2-lohed. Leaves 1 0 -1 5 , 2 -8 in. long, slender,
diaqihanous, olive-green, furnished with stomata, but without
accessory bast-bundles. Sporange small, ovoid, nearly unspotted,
only the npper edge covered by the veil. Maorospores middle-
sized, miuutely tubercled. Microspores papillose.
Hab. On Wicomico Eiver, eastern shore of Maryland, between high and
loAV tide, Ganhij.
13. I. BiPAEiA, F ng e lm . in Gray Man. edit. v. 676. — Eootstock
2-lohed. Leaves 1 5 -8 0 , resembling those of lacustris in size
and texture, 4 -8 iu. long, 4 - 4 hn. diam. at the middle, deep green,
diaphanous, furnished with stomata, but without accessory bast-
bundles. Sporange oblong, spotted, 4 in. lon g ; veil partial.
Maorospores middle-sized, white, strongly granulated all over.
Microspores large, tubercled.
Hab. Gravelly banks of the Delaware, and margin of ponds in New
England.
14. I. MELANOSPORA F n g e lm . in Oaks United States, ii., in
n o te . —'A dwarf gregarious, usually monoioous species, with a
2-lobed rootstock. Leaves few, slender, distichous, furnished with
stomata, but without accessory bast-bundles. Sporange small,
globose ; veil complete. Maorospores minute, sometimes blackish,
obscurely granulated. Microspores obscurely papillose.
Hab. Georgia, on Stone Mountain, in shallow depressions a t the base of
granite rooks near the summit, Canhy. Discovered in 1869.
16. I. Muelleei a . Br. in Berl. Monatber. 1868, 5 41.—Ehizome
9-lobed. Habit of I. echinospora. Leaves about 3 in. long, pale
green, diaphanous, narrowed to the point, furnished with stomata,
but without accessory bast-bundles. Sporange globose ; veil complete.
Maorospores with numerous minute unequal tubercles
confluent into ridges.
Hab. Queensland, in ponds at Eockhampton, 0 ’Shanessey. Discovered in
1867.
16. I. Kiekii a . Br. in Berl. Monatber., July 22, 1869 ; Kirk in
Trans. New Zeal. Instit. ii. 107, t. 7 .—Eootstock 3-lobed. Habit
of slender forms of I . echinospora. Leaves 1 0 -2 0 , 8 -4 in. long,
4 lin. diam. at the middle, pale bright green, diaphanous, tapering
to the point, furnished with a few stomata, but without accessory
bast-bundles. Sporange small, globose ; veil complete. Maorospores
small, beset all over with minute unequal tubercles.
Hab. New Zealand, in lakes a t a low level in the northern island, K irk !
17. I. ALPINA Kirk in Trans. New Zeal. In stit. vii. 877, t. 25.—
Eootstock 3-lobed. Habit of 1. lacustris. Leaves 2 0 -6 0 , about
4 ft. long, f - 1 liu. diam. at the middle, dark green, diaphanous,
tapering to the point, furnished with a few stomata, but without
accessory hast-bundles. Sporange oblong, l-6 th to l-5 th in. long;
veil comqilete. Maorospores middle-sized, smooth. Microspores
finely tubercled.
Hab. New Zealand, in lakes of the mountains of the southern island,
alt. 1700—3000 ft., AVrZc ! Gheeseman\ Berggren\