120 FLORA OF OXFORDSHIRE. 
?M. alterniflorum, DC. 
Syme, E. B. iv. 32. 515. Nym. 250. 
Native. Lacustral. Overlooked or very rare. 
First record, Morison (Bobart, 1699), ‘In foss. prope Lodden Bridge 
haud longe a Redunga oppido. M. aquat. pennatis minus foliosus, sin- 
gularibus latiusculis flosculis subjectis donatum, Hist. Ox. iii. 622. 
This may be on the Berkshire side. 
Berks (?), Northants (?). Gloster West, Warwick, Farnborough Pool 
just out of Oxon. 
M. verticillatum, L. 
Top. Bot. 167. Syme, E. B. iv. 31. 513. Nym. 250. Bx. 376. 
Native. Lacustral. Rivers, streams, etc. Local. P. July, Aug. 
First record, Sid. 1794. 
8. Swere. Mill Meadow, Brook in Grimsbury Wharf Close, 7. Bees. 
Broughton Jack Brook, A. Hr. Clattercut reservoir. 
4. Ray. Ditches in Kirtlington Meadow, W. Wilson Saunders. 
Otmoor, Marston Meadows. 
5. Isis. By bridge on Botley Road going to Medley, Sib. Ditches 
near Port Meadow, Bx 1819 in. Purton. Blenheim, Wolvercote, 
H. Bos. Isis side below Medley Lock, Duke’s Lock. The Myrio- 
phyllum of the Thames from Kelmscott to Eynsham. 
6. Thame. River two miles from Thame, 4. Fr. 
7. Thames, River at Henley, Hb. Stubbs in Br. Mus. Pond on Wood- 
cote Common. 
Berks. South Hinksey ditches by Devil’s Back Bone! W. Bx. Mar- 
cham, Abingdon Canal. 
Var. M. pectinatum, D C. With above, shallow ditches, Port Meadow, 
see Rep. of Rec. Club, 1880. Cornbury Park, Marsh by canalside near 
Duke’s Lock. 
Orv. XXVII. CALLITRICHINES, Zh. 
CALLITRICHE. L. 
C. acquatica, L. (aggregate). Water Starwort. 
Native. Ponds, streams, wet muddy places. Common and generally 
distributed. A.orP. April-July. 
First record, Sib. 1794, who also gives var. b. ‘CO. terrestris, foliis omni- 
bus ovalibus, and var. c. C. autumnalis (C. hamulata), foliis omnibus 
lUinearibus apice bifidis, floribus hermaphroditis. The var. a. having 
‘ floribus androgynis. Prof. Sibthorp observes ‘ Planta polymorpha 
plus minusve in aqua submersa, figuram varians. Var. a. in horto Oxon. 
culta in var. c. transit. The Brit. Flora, p. 4, 1804, disputes this. 
