Triglocldn.] CXLVIII. NAIADE^E. 1707 



above the middle or sometimes at the base only, tapering into erect or recurved 

 stigmas. Fruits exceedingly variable, from almost orbicular to narrow-oblong, 

 2. to 3 lines long, straight or spirally twisted, the carpels themselves straight or 

 falcate.— Hook, f, Fl. Tasm. ii. 46; F. v. M. Fragm. vi. 83; T. linearis, Endl. 

 in PI. Preiss. ii. 54 ; Cymogeton Hwgelii, Endl. in Ann. Wien. Mus. ii. 211, 

 Iconogr. t. 73, and in PI. Preiss. ii. 55 ; C. linearis, Sond. in Linnsea, xxviii. 225. 



Hab.: Islands of the Gult of Carpentaria, Ji. Brawn; Eoekhampton and neighbourhood, 

 O'Shanesy, Bowman ; Brisbane Biver and many other localities, Bai'ey. 



Tubers eaten baked. — Hoth. 



Var. duhia. Carpels 3, rarely 4 or S, curved, apparently free from the first, often stipitate 

 when in fruit.— 2'. dubium, E. Br. Prod. 343.— Cape River, Bowman ; Rockingham Bay, Dallaehy. 



4. T. Maundii (after Dr. John Maund), F. t. M. Fragm. vi. 83 ; Benth, 

 Fl. Anstr. vii. 169. Eoots thick with numerous small fibres. Stems creeping. 

 Scape erect, terete, leafless, 2ft. high or more. Leaves long, linear, i to lin. 

 broad, the upper part thick and spongy, base sheathing. Spikes not dense, 

 attaining 2 to 4in. when in fruit, the flowers and fruits all sessile. Stamens 4 to 

 6, the anther-cells very distinct but adnate to a common connective as in the rest 

 of the genus, the subtending perianth-segments sometimes thin, sometimes very 

 broad and thickened at the apex. Carpels usually 2 or 3, sometimes 4, connate to 

 the truncate apex, the stigmas broad and very spreading. Fruit about 3 lines 

 long, cylindrical, but with 2 furrows on the back of each carpel, the carpels 

 almost drupaceous, each with a thinly cartilaginous endocarp with an acute 

 dorsal rib, the exocarp loose, rather thick, the 2 dorsal obtuse ribs often leaving 

 cell-like cavities between them and the endocarp. Seed slender, cylindrical, erect. 

 — Maundia triglochinoidcs, F. v. M. Fragm. i. 23. 



Hab.: Still waters off Brisbane River, Moreton Bay, F, v. Mueller, W. Hill, Baileij. 



2. APONOGETON, Thunb. 



(From apon, the Celtic for water, and geiton, neighbour, alluJing to the 

 plants being aquatic.) 



Flowers hermaphrodite. Perianth of 2 segments one on each side, small or in 

 species not Australian petal-like. Stamens usually 6. Carpels of the ovary 

 usually 3, with 2 to 6 ovules in each carpel all erect from the base. Seeds ovoid 

 or oblong, erect. Embryo straight, with a more or less prominent plumula in a 

 groove on the inner face. — Aquatic herbs with erect or floating or submerged 

 leaves usually oblong or narrow. Scapes leafless except a very deciduous mem- 

 branous bract or spatha enclosing the young spike, but almost always fallen away 

 before the flowering, leaving an annular scar. Flowers sessile in a terminal 

 spike, simple in the Australian species. 



The genus extends over tropical Asia and tropical and southern Africa. 



Bulb-shaped rootstock covered with filamentous remains of leaf-sheaths 

 and emitting roots from the base. Leaves under 6in. long. Fruit- 

 earpels tapering into a short recurved style 1. A. nioiwstachytis. 



Bulb-shaped rootstock with fewer filaments, emitting fibrous roots from 

 the apex. Leaves above 6iD. long. Fruit-carpels obtuse with the 

 rudimentary style almost lateral 2- A. elongatus. 



1. A. monostachjrus (spikes simple), Linn. f. Suppl. 214 ; Bcnth. Fl. 

 Austr. vii. 188. " Kapabina," BloOmfield Eiver, Eotli. Rootstock thickened 

 into a hard woody bulb-shaped tuber, covered with filamentous remains of old 

 leaf-sheaths and emitting fibrous reots from the bi.se or lower half. Leaves 

 mostly submerged, oblong or lanceolate, obtuse or almost acuminate, cordate or 

 rounded at the base,, mostly 3 to 4in. long and i to fin. broad, with 5, 7 or rarely 

 only 8 longitudinal nerves. Spikes simple, usually dense, 2 to 2^in. long, rarely 

 longer more slender and interrupted. Spatha 2 or 3 lines long, falling off before 

 the first flower expands. Perianth-segments from broadly lanceolate to obovate, 



