C h a v is .
Subgeuus 1 . S e la g o . Sporaugia p l a c e d in tlie axils of imaltercd
leaves all down the stem. Leaves multifarious.
Group of L . Selago. Stems comparatively short, erect or sub-
erect. Usually terrestrial.
Leaves ascending . . . . Sp. 1 -7 .
Leaves spreading or squarrose . . Sp. 8 -1 9 .
Grouj) of lu taxifolium. Stems comparatively long, more or less
decidedly pendulous. Usually epiphytic.
Leaves densely disposed, short . . Sp. 2 0 -2 5 .
Leaves densely disposed, longer . . Sp. 2 6 -8 5 .
Leaves laxly disposed . . . Sp. 3 6 -3 9 .
bubgcuus 2. ScBSELAGO. Leaves multifarious, a little different
from the bracts, but iiassiug into them graduall}'. Sxiorangia
aggregated into indistinct terminal spikes . Sp. 4 0 -4 9 .
Suhgenus 3 . L e p id o t is . Leaves multifarious. Sporangia aggregated
into distinct terminal sjrikes, the bracts of which, excejit
in the first groux), differ decidedly from the x^roxier leaves in
shape and size.
Group of L . inundatwn. Barren branches trailing, rooting to
the tip fertile, simxfie, erect. ^ Bracts scarcely different from
the proper leaves. Terrestrial, in swamps . Sp. 5 0 -5 2 .
Grouxi of L . Phlegmaria. Stems more or less decidedly pendulous,
dichotomously forked from the base. Spikes slender, dichotomously
forked, with bracts very different from the leaves.
Epiphytic.
Leaves o b t u s e ......................................................gp. 53- 5 7 .
Leaves a c u t e ......................................................gp. 5 8 -7 l!
Group of L . cernuum. Er ect, with tree-like habit and stems
unbraiiohed towards the base. Terrestrial . Sp. 7 2 -7 5 .
Group of L. clavatnm. Main stem wide-trailing, with ascending
branches. Terrestrial.
Leaves large, not decurrent
Leaves small, very decurrent
Sp. 7 6 -8 6 .
Sp. 87.
Group of L. laterale. Stems erect or spreading; spikes lateral.
Terrestrial . Sp. 8 8 -8 9 .
Subgenus 4 . D iph a s id m .
usual ill SAaginella.
with small bracts.
Leaves distichous and dimorphous, as is
Sporangia collected into terminal spikes.
Stems slightly compound .
Stems long, very compound
Sp. 90.
Sp. 9 1 -9 4 .
Subgenus I. S e la g o .
Group of L . Selago.
1. L. GOMPACTuii Hook. Ic. t. 244.— Stems erect or suberect,
8 -9 in. loug, several times dichotomously forked; braiichlets long
or short, erect, cylindrical, 7) in. diam., including the leaves.
Leaves very dense, ovate, obtuse, ascending, l-1 2 tli to l - 8 th in . long,
very rigid, but not thick in texture, green or tinged with red, entire ;
midrib distinctly raised from the nearly flat back. Sporangia in
the axils of unaltered leaves all down the stem.
Hab. High Andes of New Granada and Ecuador, 10,000—14,000 ft.,
Jameson ! Ilartioeg, 4468 ! Spruce, 5611!
2. L. CRUENTUM Spring, Mon, ii. 3 4 .— Densely tufted, little
branched; barren stems short, tr a ilin g ; fertile ascending, simple,
4 -1 in. loug. Leaves crowded, linear, ascending, secuiid on the
trailing steins, bright green or tinged with red, glossy, thick and
firm ill texture, 4 in. long, entire, concave on the face, rounded on
the back. Sporangia in the axils of unaltered leaves all down the
ascending branches.
Hab. New Granada, Purdie ! Venezuela, in marshes of the Sierra Nevada,
Moritz 372 ! Connects the Selago and inundation groups.
3 . L. S e la g o Linn. Sp. P lant, edit. ii. 1565 ; Schk. Crypt, t.
159; Hook. Brit. Ferns, t. 54. Selago vulgaris, S ch u r .— Stems
erect, 8 -9 in. long, several times dichotomously forked; branchlets
erect, often short, 4 in. diam. including the leaves. Leaves crowded,
ascending, lanceolate, f.—} in. long, green, glossy, entire or denticulate,
moderately thick and firm in texture, often with buds in
their axils ; midrib obscure. Sporangia in the axils of unaltered
leaves all down the stem.
Hab. Arctic and north temiierate zones of both hemisxiheres; also New
Zealand, Australia, Antarctic America, the Eastern Himalayas and mountains
of Central Brazil. Planauilius jpatens P. B. (L. rerersum Kit.) is a form with
rather spreading leaves; L . suberectum Lowe, of Madeira and Azores is a
luxuriant variety with suberect stems ; L . Haleakalee, Bracken Eil. Wilkes, tab.
45, fig. 2, of the Sandwich Isles, is a form with more slender branches and
shorter leaves; L . erubeseens Brack. Fil. Wikes, tab. 45, tig. 1, also from
Sandwich Isles, is a form with red-tinted leaves, not more than J in . long ; var.
saururoides Bory et Durville in Mem. Linn. Soc, Paris, 1826 pi. 4, of the
Falkland Islands and Ascension Island, approximates to L. Sauriirus by its
longer, thicker leaves.
4. L . J am e so n i Baker.— Stems erect, 8 -4 in. long, several
times dichotomously forked; branchlets short, erect, cylindrical.
4 -4 in. diam. including the leaves. Leaves dense, ascending,
lanceolate, acute, 4 iu. loug, thick in texture, green, tinged with
red, strongly ciliated, rather convex on the back ; midrib indistinct.
Sporangia in the axils of unaltered leaves all down the stem.
Hab. Andes of Ecuador, Jameson '. Midway between L . enjthrmum and
Selago.
5. L. EUBRUJi Cham, iu Linuffia, viii. 889 ; Kunze Earren., t. 4 0—
Stems suberect, 6 -9 in. long, once or twice dichotomously forked;
branchlets long, erect. Leaves dense, multifarious, linear, straight