90 CALLITKICHACE.E . 



5. E. Lathyris.* L. (Caper Spurge.) 

 Thickets, and as a weed in gardens. 6, 7. 



Gardens at Roxeth and Pinner, occurring as a weed ; 

 and Grove Garden, Harrow. The seeds form a dangerous 

 substitute for capers, which are the buds of the exotic 

 Capparis spinosa. L. 



6. E. amygdaloides. L. (Wood Spurge.) 

 Woods and thickets. 3-6. 



Pinner and Ruislip Woods ; Horsington Lane, thickets 

 at Greenford ; Roxeth, by footpath to Rifle butts. Stan- 

 more. (Varenne.) 



ORDER LXXVIII. CALLITEICHACE^. (WATER STARWORT 

 TRIBE.) 



CALLITRICHE. ( Water Starwort.) 



1. C. verna. L. (Vernal Water Star wort.) 

 Ditches and pools. 4-9. 



Abundant everywhere ; a very variable plant. 



2. C, stagnalis. Scop. (Broad-fruited Water Starwort.) 

 Usually on mud. 5-9. 



Harrow. Eastcott; Harrow Weald Common. (Flor. 

 Midd.) 



3. C. hamulata. Kiitz. (Falcate Water Starwort.) 

 Lakes and streams. 6-9. 



In the main feeder of Ruislip Reservoir. The plant is 

 of a rigid compact habit ; and by this, as well as its falcate 

 bracts, may be distinguished from other species. 



