Sparganium.] OXXXVI. TYPHACER. 161 
sessile or nearly so, broadly obovoid, very obtuse, mucronate with the 
persistent remains of the s style. 
Pu Yarra, ake uec, Moun tar Coe and Ovens River, F., 
iei plant has the simple inflorescence foliage and habit of the erect varieties of 
€ no; ur S. simplex, but has not the narrow tienes siform fruit of that 
aiti is qe «d that of S. ramosum but sm 
Pur: p Lea about 4 in. broad and Vi. inflorescence sometimes . 
Oldie rmt the specimens pol t yeti in fruit.—N. S. Wales, Leichhardt, Woolls, 
hese specimens see how some approach to "n common no 
8, UT Can they have bor per ier 
Order CXXXVII. LEMNACEZ. 
o n ne. 
fives, her 1- or2- celled. Ov ry 1-celled, with 1 or more ovules. 
See ey ort, with a slightly thickened ami Fruit a minute utricle. 
or more, with or without albumen 
The 
Spread ek! limited to the two — ee in Australia, is widely 
rectly iden Tthe globe in Vene or standing w. The Au v species, if cor- 
ever Amin bl have all a w e range, at Mar in the Old World. ‘There is how- 
herbaria, ‘eee e difficulty in hes ermining many of the sos IR preserved in 
Tecently work od 1 i ctification. e Lemnaceme hav ind 
elaborate e e o car e by Professor F. Hegelmaier, of Tübingen, in an 
i ie nt 4 eine 
the characte Pie te ted by 16 plates (Die Lemnaceen, Leipzig, 1868, copies 
own dist he species independently of the fructifica 
Pref ese practically asce wi ho the nt s 4 of a 
distinctions of th I have therefore here confined myself to: the more obvious 
Which some f e principal species without T into the e particulars by 
details to Hege of the Australian forms mig se Speed, referring for further 
Â Special a ier's work, which oisi Spe iano by all those (s would make 
dy of these burious organism 
Fronds miny 
n, e te, ee no fibres, flowering in a bn on the 
Tonds emitting from Mfr under edu one or mare fib " 
t 
Tower in a fme of tho mar , 2. LEMNA. 
1. WOLFFIA. 
Lr 
