THE HjORA of the NORTHERN TERRITORY. 113 



Flowers (when fully out) pedicellate in a raceme, sometimes almost 

 shortened into an umbel. — 4. C. pomiformis., 



1 . C. filiformis, Linn. — Some specimens from Victoria River, F. v. Mueller 



2. C. glabella, R. Br. — Islands of the Gulf of Carpentaria, R. Brown ; 

 Sturt's Creek, F. v. Mueller ; Port Darwin, Sohultz. 



3. C. mdantha, R. 5r.— Tungiegi Waterhole, G. F. Hill (No. 509), 

 10/8/1911. Specimen in fruit only. 



Appears nearest C. melantha, but the fruits are smaller and the edges of 

 the perianth not so conspicuous. 



4. C. pomiformis, Nees. — ^North Australia, Drummond (No. 151), and 

 perhaps (No. 150) ; Swan River, Preiss (No. 1625) ; King George's Sound, 

 Harvey, F. v. Mueller. 



HERNANDIACEZE. 

 (COMBRETACEffi). 



1. GYROCARPUS, Jacq. 1763. 



1. G. americanus, Jacq. (Gyrocarpus Jacquini, Gaertn.). — Northern 

 Territory, G. F. Hill (No. 463), 1911. Fruit only. 



Victoria River, Bynoe, P. v. Mueller. 



In India the wood is used to make boxes and toys, and is preferred to all 

 others for catamarans ; the seeds are made into rosaries and necklaces. 



CRUCIFERffi. 



Pods linear at least 4 times as long as broad. 



Pods terete or tetragonous, the valves turgid or with a very pro- 

 minent midrib. — 3. Stenopetalum. 



Pods flattened, usually long, the flat valves parallel with the 

 septum. Cotyledons accumbent. — 2. Cardamine. 



Pods short or oblong, rarely 4 times as long as broad. 



Pods terete or globular, the valves very convex. — 3. Stenopetalum. 

 Pods flattened, the fiat valves parallel to the septum or to each 



other. 4. Alyssum. 

 Pods flattened laterally, the valves boat-shaped, with their flat sides 



at right angles to the narrow septum. — 1. Coronocarpus. 



1. CORONOCARPUS, Gaertn. 

 (SENEBIERA, Poir). 



1. G. didymus, Linn. (S. didyma, Pers.). — A common weed in sandy soil, 

 especially near the sea, in all warm countries, perhaps indigenous to North 

 Australia, and now estabUshed in the neighbourhood of towns in almost all the 

 colonies. 



Wart Cress. Imparts' a bad flavour to milk. 



2. CARDAMINE, Linn. 



1 . C. eiistylis, F. v. M. — On the rivers flowing into the Gulf of Carpentaria, 

 rare, F. v. M. 



