NOTES OF PLANTS OF THE NEIGHBOURHOOD OF OXFORD. 117
leaves decaying' upwards. The leaves are triangular in outline, bipinnate, and with wedge-shaped segments. This is the common form. I think my earlier specimen may be the base of an old seedling, perpetuated by a lateral shoot, a short, vertical rhizome being a common structure in the TJvihelWftrcB. The stems of the other type are developed from lateral buds in similar elongated submerged stems towards the autumn, the parent stems afterwards breaking up, and decaying. Mine, I think, was wholly a spring growth. I have since seen specimens of (E. pimpbieUoideSy L., in the British Museum herbarium, collected by Mr. A. G. More in the Isle nf Wight evidently early in the year, which show that in that species, the mode of growth is just the same as in my specimen oiJiuviatUis.
Ilieracium amplexlcaide, L. — Only to be found within the limits of the Botanic Garden, where, at the foot of old walls, it is well established.
FraxiiiHS lieterophijlla, Vahl. — The tree (of course planted) mentioned by Walker still stands, though not very healthy, near the eastern end of the broad walk in Christ Church Meadow.
Llnaria purpurea. L. — Walls of churchyard, Iffley, Oxon.
Lathraea squamaria, L. — Copse near Cumnor Hurst, Berks, but west of the high-road.
Teucrium Scordlum, L. — Banks of the Thames, Godstow, Berks, H. Boswell.
Lam'ium maculatum, \i., var. Irevigatum, L. — Island in the Cherwell, by Christ Church Meadow, ahundant, but no doubt originally derived from the Botanic Garden.
Primula variabilis, Goupil. — Copse near Botley, Berks.
ChenopodiuM miirale, L. — Near the railway station, Oxford.
Polygonum mite, Schrank. — Port Meadow, Oxon ; probably to be found in low ground near the Thames throughout its course. It occurs all along the Middlesex bank.
Aristolochia Clematitis, L. — Abundant and very striking in its exotic- looking aspect on the side of a deep ditch bounding one side of part of the precinct of the nunnery at Godstow, Berks, now used as a kitchen garden. It has no relation to the present cultivation, but is the last relic of the ancient use of the ground.
Salix decipiens, Hoffm. — A large tree, mentioned in W^alker's ' Flora,' stood in Christ Church Meadow near the " Barges," but was blown down some years since. A small tree of what I take to be the same species grows by the side of the bounding ditch.
-S". Ilulfinnntiiana, Sm. — By the Thames between Iffley and Kcnnington Island, Oxfordshire side.
Leucoium (cstivum, L. — Osier Holt between IfHey and Sandford, also Kenniiigton Island ; both on Oxfordshire side of river.
Tulipa sylcestris, L. — By the path round Christ Church Meadow, espe- cially close to tlie trunks of trees. A most stiuited state, hardly to be recognized except from the bulbs, and never flowering.
Gagea lutea, Ker. — I have seen a single specimen, obtained by the Rev. T. 0. Marshall, from the Lathrcea locality on Cumnor Hurst, but I never succeeded in tinding any more.
Stratiotes aloides, L. — Pond in Magdalen Meadows ; originally planted, and afterwards lost. Recently replanted by Professor Lawson.
Potamogeton eu-pectinatus, Syme. — This seems to be the connnoncr segregate in the Oxford waters.
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