658 CXLV. CYCADACEX. (W. T. Thiselton Dyer.) [Cycas. 
BURMA ; dry forests of the Prome district, Kurz; Shan States, Aplin.—Dis- 
TRIB. Siam, Cochin China. 
Very close to C. pectinata, and perhaps only a geographical form. The enlarged 
base of the stem calls to mind the habit of some species of Dasylirion. Anthert 
ferous scales about $ in. long, with a slender acumen of the same length. Carpo- 
phylis somewhat smaller than in C. pectinata, wholly tawny-villous when young; 
blade afterwards glabrescent above, marginal teeth above 1 in. long; acumen about 
2 in. long, flat from a broad base and spinous dentate in Burmese specimens, almost 
subulate and entire in those from Cochin China. Seeds 14 long, obovoid-oblong 
(Kurz). 
** Margins of leaflets revolute. 
5. C. Beddomei, Dyer in Linn. Trans. Ser. 2, Bot. i. 85, t. 175 
antheriferous scales long-acuminate, acumen in upper half of cone strongly 
deflexed, blade of carpophyll ovate-lanceolate tapering into a long acumen 
strongly dentate-lobate. C. revoluta, Bedd. For. Flor. 227 (not of 
Aunb.). 
E. Mapras; abundant on Cuddapah and other hills, Beddome. 1 
A low shrub. Stems only a few inches high, clothed with the glabrescent xw 
imbricated leaf-bases. Leaves about 3 ft. long, 9 in. wide, rachis subquadrang??i 
petiole about 6 in. long, strongly 4-angled, with a few minute teeth in upper ‘ de 
clothed at base with a tufted tomentum ; leaflets about 3 in. wide, strongly revo t 
Male cone about 1 ft. long, 3 in. diam., very shortly peduncled ; antheriferous gans 
tapering acuminate from an oblong-deltoid base, ascending at the base of .the on 
strongly deflexed in the upper half or two-thirds. Carpophylls 6-8 in. long, bise 
two pairs of ovules above the middle; blade 3 in, long, 1 in. wide. Seeds globose, 
1i in. diam. 
CLASS, MONOCOTYLEDONES. 
Orver CXLVI. HYDROCHARIDEIE. 
Aquatic herbs. Leaves undivided. Flowers moncecious Or dicc : 
enclosed in an entire or 2-leaved spathe, fem. solitary; perianth super, : 
Sepals 3, green or petaloid. Petals membranous or 0. Stamens 3-1, 
anthers 2-celled. Ovary inferior, placentas parietal or projecting a” 
almost meeting; styles or style-arms 3-12; ovules anatropous or OT^ — 
tropous. Fruit rarely dehiscent, membranous or fleshy, few- or many 
seeded. Seeds exalbuminous, embryo various. 
Tribe I. ĦHydrilleæ. Fresh-water herbs; stem branching, leafy. 
Spathes small, sessile. 
Leaves whorled. Perianth double. Ovules anatropous . . 1. HYDRILLA. a 
Leaves scattered. Perianth single. Ovules orthotropous. . 2. LAGAROSIPHOP: 
Tribe II. Vallisneriesz. Fresh-water herbs, stemless, or with stolons 
only. Leaves sessile, long and narrow. Spathes on long scapes. 
Flowers unisexual. Perianth single. . . . . . . 3. VALLISNEBIA. 
Flowers uni- or bi-sexual. Perianth double . . . . . . 4. BriYx^ 
. uh 8 
Tribe III. Stratiotee. Fresh-water herbs, stemless OT - 
creeping rootstock. Spathes peduncled. Perianth double. eae 
various. 
18. 
Flowers unisexual. Male spatnes 2-3-fld. Ovary not beaked 5. HypRooHa® 
ious, 
