62 cxx. POoDOSTEMONACEX. (J. D. Hooker.) 
minute, testa mucilaginous, albumen 0; embryo straight, cotyledons 2, 
radicle inferior.—Genera 21; species about 120, chiefly tropical. 
An Order of very doubtful affinity,'some genera of which I am disposed to regard 
as perhaps consisting of reduced forms of Scrophularinee or Lentibularinee. The 
species are probably very numerous in India, though unknown in rivers having snow- 
feeders. I have followed Weddel’s most careful monograph in describing the Indian 
species, reducing the genera in accordance with Bentham’s revision of these in the . 
Genera Plantarum. I suspect that an examination of more copious materials will modify 
the characters of the species, and perhaps bring some of them together as varieties or 
forms of dimorphic or polymorphic plants. 
Tribe I. Tristichere. Flowers 2-sexual. Stamens 1-3. Ovary 3- 
celled. Styles 3. 
Stamens 3 , , e. © © © © 5. o o 1l. TERNIOLA. 
Tribe II. Bupodostemew. Perianth of 2 rarely 3 scales. Stamens 
1, or 2-3 with the filaments connate. 
Stigmas subsessile, broad, flat, crested. Stamens 2 
. . 2. HYDROBRYUM. 
Stigmas short, linear or ovate, entire. Stamens 2 
0. > « . 9. PODOSTEMON. 
1. TERNIOLA, Tulasne. 
Stems confluent into an expanded horizontal lobed frond, or in one 
species long and floating. Leaves minute, setaceous. Flowering-buds 
adnate to the base of the stem, or scattered along the elongated branches ; 
pedicel solitary, with a ring of scale-like leaves usually forming a short 
sheath round its base. Flowers 2-sexual. Perianth hyaline, 3-lobed. 
Stamens 3, filaments free. Ovary 3-celled; styles 3, spreading, inner, 
linear; placentze thick, in the inner angles of the cells. Capsule ovoid, 
septicidally 3-valved, valves equal, septa vanishing.—Species 7, all Indian. 
* Stems Srond-like horizontal. 
1. T. zeylanica, Tul. Monogr. Podost. 190, t. 13, f. 3; plant flat 
suborbicular or irregularly lobed, leaves some very narrow in rosettes, others 
connate into a short broad tubular or cup-shaped echinate sheath with a 
ciliate mouth. Wedd. in DC. Prodr. xvii. 46. T. ceylanica, Wight Ic. 
t. 1919. Tristicha zeylanica, Gardn. in Cale. Journ. Nat. Hist. vii. 177. 
Lawia zeylanica, Tul. in Ann. Sc. Nat. Ser. 3, xi. 119. Dalzellia zeylanica, 
Wight l. c. 34. Mnianthus zeylanicus, Walp. Ann. iii. 443. 
CEYLON ; on smooth gneiss rocks in streams at Peradenyia. 
Plant frond-like, attached to stones, about 1 in. diam. “Leaves simple, sometimes 
forked or lacerate, 4 in. long, mixed with papilla. Sheath bristling with rigid teeth 
(tips of connate leaves), Pedicel equalling the flower, at length elongate and jin. 
long. Perianth oblong. Stamens included. Capsule ellipsoid, subsessile, 9-ribbed, 
crowned with 3 recurved stigmas. 
2. T. pulchella, Tul. Monogr. Podost. 192, t. 13, f. 4; plant minute 
narrow flat lobed, leaves distichous short linear acute, sheath cylindric of 
slender connate leaves mouth ciliate. Wedd. in D.C. Prodr. xvii. 46. 
Lawia pulchella, Tul. in Ann. Sc. Nat. Ser, 3, xi.113.  Mnianthus pul- 
chellus, Walp. Ann. iii, 443. 
The Concan ; near Bombay. 
Plant frond-like, $5 in. diam.; lobes very short, terminated by buds. Leaves } in. 
