880. S. AN05IALA Spring Mon. ii. 247. Lycopodium anomahwi
Hook. & Grev.— Stems suberect, with root-fibres from the lower
part, 4 -6 in. long, pinnate, the branches erecto-patent, the lower
copiously compound. Leaves of the lower plane contiguous and
ascending on the branches, spaced and spreading on the stem,
ovate, acute, a line long, dark greeu, membranous, muoh dilated,
very cordate, strongly ciliated, and much imbricated over the stem
on the upper side at the base ; leaves of the upqier plaue half as
long, oblique ovate, cuspidate. Spikes copious, resupinate, as
broad as the leafy branches ; bracts of the upper qilane oblique
ovate-lanceolate, e r ec to-patent; of the lower qilane ovate-cuspidate,
ascending.
749 1^1123 ! Jenman 2322 ! Cayenne, Leprieur 165 ! Sagot
831. S. LEPTOSTAOHYA A. Bi'. ill Crypt. Nov. Gran. 373.— Stems
slender, suberect, with root-fibres from the lower half, bisulcate
down the face, closely pinnate, the branches erecto-qiatent, the
lower copiously compound. Leaves of the lower qilane contiguous
on the branchlets, spaced on the main stem, ovate, acute, l-1 2 th to
l-8 th in. long, bright greeu, firmer in texture than in S. Lychnuchus,
nearly eqnal-sided, not ciliated, a little dilated, and slightly imbricated
over the stem on the uqiper side at the base ; leaves of the
upper qilane a third as long, oblong-cuspidate. Spikes resupinate,
reaching an inch or more in length, l-1 2 th in. d iam .; bracts of the
upper plane lanceolate-acuminate, e r e c to-patent; of the lower plane
ovate-lanceolate, ascending, strongly keeled.
Hab. New Granada, a t Mujo, 2500 ft., Lindig 1514 !
832. S. K a e s t e n ia n a A. Br. in Crypt. Nov. Gran. 372.— Stems
about a foot long, erect from a decumbent base, bisulcate down the
face, copiously pinnate, the short erecto-patent branches sparingly
comqioiind. Leaves of the lower qilane ovate, acute, dark green,
subdiaphanous, very unequal-sided, denticulate on the upper
margin, much produced on the uqiper side at the base, and imbricated
over the stem ; leaves of the upper qilane a third as long,
ovate-oblong, cuspidate. Spikes short, often geminate, but little
flattened ; bracts not very obviously dimorphous.
Hab. New Granada, at Puerto Cabello, Karsten 174.
333. S. RAUOSISSBIA Baker in Journ. Bot. 1885, 295. — Stems
erect, 4 ft. long, simqile near the base, copiously pinnate above it,
the lower branches decompound. Leaves of the lower plane
spaced even on the branchlets, ascending, oblong-lanceolate or
lanceolate, acute, a line long, bright green, membranous, nearly
equal-sided, serrulate on both sides, rounded, and a little imbricated
over the stem on the upper side at the base ; leaves of the
upper plane ha lf as long, ovate, with a large cusp. Spikes very
copious, resupinate, i - i i n , long, l-1 2 th to l-8 th in. diam. ; bracts
very dimorphous, those of the upper plane lanceolate, ascending,
rather sq u a r ro se ; those of the lower plane ovate-lanceolate,
ascending.
Hab. Eastern Peru, near Tarapoto, Spruce 4008! A near ally of S.
molliceps. •’
834. S. STENOPHYLLA A. Bi’. In Ann. Sc. Nat. 4, xiii. 83. S.
macroura Liebm. S. Lychnuchus Fourn. F il. Mex. 148, non
Spring.— Stems suberect, pale straw-coloured, 4 -1 ft. long, acutely
angled on the face, with root-fibres from the lower half, copiously
qiinnate, the lower branches copiously compound. Leaves of the
lower qilane spaced even on the branchlets, ascending, oblong-
lanoeolate, subobtuse, l-1 2 th to l-8 th in. long, unequal-sided,
serrulate on the npper edge, rounded, and imbricated over the
stem on the upper side at the base ; leaves of the upper plane a
third to half as long, oblique ovate, cuspidate. Spikes short,
resuqiinate, 1 lin. diam. ; bracts of the upper plane lanceolate,
erecto-patent ; of the lower plane ovate-lanoeolate, ascending,
serrulate.
Var. rigidiuscula Fourn. is a form of exposed places, with
shorter more rigid leaves than in type, and nearly square spikes
with indistinctly dimorphic bracts. S. albospioa Hort. is a form of
this species.
Hab. Mexico, Boxirgeau 1654 ! Hahn 2156 !
2. IsO E T E S
Sporangia comparatively large, membranous, 1-celled, uniform,
indéhiscent, placed in a hollow of the dilated base of the leaves,
those of the outer leaves containing macrospores and usually those
of the inner leaves of the same plant microsqiores. blacrospores
globose, usually chalk-white, with three prominent ribs radiating
from the apex to the middle, leaving the lower hemisphere, with
the hihim at its base, ribless. Microspores very minute, dust-like,
trigonous, with a single ventral rib.— Stemless perennials, aquatic
or growing in damp ground, with a 2-3-lobed rootstock of firm
texture, emitting dense tufts of root-fibres from its underside.
Leaves without any lamina, forming a dense rosette, subulate,
rounded on the hack, with 4 vertical air-channels divided by transverse
septa, always furnished with central and dorsal vascular
bundles and often with others round the circumference ; dilated base
of the leaf membranous, a space round the sporange (area) thicker,
the sqiorange often more or less covered in part by the produced
epidermis of the upper surface of the leaf (veil) ; above the
sporange is a small transverse slit (foveole), with a small membranous
process (labium, lip) produced from its lower and another
(liugula, tongue) from its upper side, the horseshoe-shaped base of
the latter (glossopodium) immersed in the lamina.
• For further information see a paiier by A. Braun entitled “ Zwei Deutsche
Isoetes-arten,” in Verhandlungen des b o t a n i s c h e n V e r e i n s für die Provinz
Brandenburg, lieft 3—4 (1862), and Berlin Monatber. 1868, pp. 535 to 539;
Durieu in Bull. Bot. Soo. France, vol. vili. (1861), p. 164, and vol. xi. (1864),
p. 106 ; Engelmann in edit. v. of Gray’s Flora of the Northern United States and
Amer. Nat. 1874, p. 214, and Milde Fil. Eur. p. 274 to 290.