FLOWERING PLANTS FROM MADAGASCAR. 279 



about 6 unequal, persistent, much imbricated, orbicular or ob- 

 ovate-oblong reflexing bracts. Perianth infundibuliform, -| lin. 

 long, consisting of 5 orbicular-cuneate segments, which are similar 

 in texture to the bracts of the involucre. Stamens 5, exserted ; 

 filaments flattened ; anthers oblong. Pistil rudimentary in the 

 male flower. Female flowers and fruit unknown. — Ankaratra 

 mountains. 



Hydrostachys verruculosa, A. Juss. Tanala. 



H. imbricata, A. Juss. Tanala. 



H. gottdotana, Tulasne. Tanala and Betsileo country. 



TJrera Eadula, Baker, n. sp. 



A tree or shrub, with stout terete branchlets, with a brown 

 bristly epidermis. Leaves crowded at the end of the branches ; 

 Btipules large, brown, deltoid, scariose, persistent ; petiole 1|— 2 in. 

 long, densely armed with minute pellucid stinging bristles ; blade 

 cordate, half a foot long and broad, bipinnatifid, acute, the secon- 

 dary lobes reaching about halfway down to the midrib, conspi- 

 cuously crenate, the upper surface dark green, very rugose, and 

 minutely bristly, especially on the main veins ; the under surface 

 similarly bullate and bristly. Flowers in a bipinnate sessile 

 panicle shorter than the leaves ; rachises slender, densely bristly. 

 Flowers sessile, pentamerous, male only seen ; bud depresso- 

 globose, brown, glabrous. Sepals obovate-cuneate, \ lin. long. 

 Stamens included. — Betsileo-land. 



Ottelia lakcifolia, A. Bich. Between Tamatave and Anta- 

 nanarivo. 



Aponogeton quad rangul are, Baker, n. sp. 



Root-stock tuberous. Petiole not above a few inches long in 

 the specimens ; lamina lorate, a foot or a foot and a half long, 

 1-1| in. broad, obtuse, moderately firm in texture, narrowed gra- 

 dually from the middle to the base, with distinct vertical ribs and 

 distinct horizontal cross bars, the interspaces entirely filled up 

 with parenchyma. Peduncle very thick, reaching a length of a 

 couple of feet. Spikes about 6, crowded at the apex of the 

 peduncle, cylindrical, 2-3 in. long, sometimes branched. Bracts 

 none. Bracteoles minute, orbicular. Stamens 5-6 ; filaments 

 filiform ; anthers minute, yellow, globose. Carpels usually 3, 

 shorter than the stamens in the flowering stage. — Tanala. 



A. r/LVACErM, Baker, n. sp. Leaves entirely submerged, very 



LINN. JOTJRN. — BOTANY, VOL. XYIII. Y 



