130 Botany. 



1189. P. sylvatica, L. (RED RATTLE), 58, P. Moist heaths, open 



copses, damp hill pastures ; not common. 



1. PI. in boggy valley on Keston Common, '06. W.H.G. 

 a. First record, 1629 : Erith. 



1190. RHINANTHUS crista-galli, L. (YELLOW-RATTLE), 6, A. 



Moist meadows and pastures, especially on the chalk ; 

 common, and often a serious pest. Semi-parasites on grass 

 roots, with loose-pollen fls., visited by humble bees and 

 sometimes butterflies. 



1194. MELAMPYRUM pratense, L. (COW-WHEAT), 68, A. Moist 

 woods and thickets ; very common in these habitats near 

 Woolwich. Semi-parasites on the roots of grasses. Very 

 long corolla tube (15 mm.) ; the secretion of nectar does 

 not cease with the fading of the fl. ; it attracts ants 

 (Formica fusca), who mistake the seeds for their chry- 

 salises and take them away (Lubbock). 

 var. b). latifolium, Bab. 

 1. Near Shoreham, M. 



NOTE. Other cultivated plants belonging to this order are : 

 Calceolaria and Pentstemon. 



N.O. 8. OROBANCHACEM. Total root parasites, only sepa- 

 rated from the Scrophulariacece because of their 

 aristocratic dependency on other plants. 



(321) OROBANCHE, L. (BROOMRAPE) No Chlorophyll ; em- 

 bryo a simple filament without cotyledons and dif- 

 ferentiation of parts. The only Sp. whose presence 

 in the district has been confirmed is 0. minor. 



1199. 0. major, L. 5 7, P. Heaths ; parasitic on leguminous 

 shrubs, as furze and broom. 



a. Gates Green gravel pit, '93. Broom nearly all dead 



in '97. Sc. 



b. Charlton Wood, 1787 ; Eltham, 1836. 



c. 1st record, 1587 ; Shooter's Hill. 



Probably robust plants of 0. minor were mistaken for 

 major. W.H.G. 



1202. 0. elatior, Sutton. 6 7, P. Very rare ; parasitic on Cen- 

 taurea scabiosa. 



a. Fields nr. Woolwich, 1836. 



1204. 0. hederae, Duby (under minor, B. & H.), 67, P. Para- 

 sitic on ivy ; v. rare. 



a. Wood on side of chalk hills nr. Shoreham, 1868. 



