A HISTORY OF 
*Potamogeton Balb. 
Crouch) 
— pusillum, L., var. tenuissimus, Jve/ (J.S.) 
Paris quadrifolia, L. In chalk and clay, not 
arenaceous soils 
Ruscus aculeatus, L. 
Colchicum autumnale, L. Barton (Abbot) 
Allium ursinum, L. Calton (J.S.) 
*Narthecium ossifragum, Huds. Amprhill Bogs 
(Abbot) 
Typha angustifolia, L. C/p4il? (C. Crouch) 
Juncus obtusiflorus, Ehrh. Harlington Brickyards 
U.S.) 
*Schoenus nigricans, L. Ampthill, Potton (Abbot) 
Scirpus sylvaticus, L. Flitwick Marsh (J.H.), 
Westoning 
*— cespitosus, L. Ampthill, Flitton Moors 
(Abbot) 
*Rynchospora alba, Vahl. 
Potton (Abbot) 
t*Carex dioica, L. Ampzthill (Abbot) 
alpinus, 
Chphill (W. 
Ampthill Moor and 
— flava, L., var. minor, Towns.  Soushill 
(J.S.) 
Acorus Calamus, L. Tingrith Park ; planted 
J.-S.) 
Apera Spica-venti, Beauv. Srreatiey (J.S.) 
BEDFORDSHIRE 
Roth. Maulden 
Calamagrostis Epigeios, 
(C. Crouch) 
+t— lanceolata, Roth. Chicksands (C. Crouch) 
Catabrosa aquatica, Beauv. 
tPhleum phalaroides, Wibel. 
(T. B. Blow) 
Poa compressa, L. Sérearley (J.S.) 
Festuca sciuroides, Roth. Ampthill (Druce): 
Bromus commutatus, Schrad. Barton (J.S.) 
Nardus stricta, L. FAtwick (McLaren) 
Lomaria Spicant, Desv. Flitwick (J.S.) 
Asplenium Adiantum-nigrum, L. 
tLastrea uliginosa, Newm. Fétwick (McLaren), 
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i— a Pres]. Potton (Abbot), probably 
L. spinulosa was meant 
*— Thelypteris, Presl. Poston (Abbot) 
Aspidium aculeatum, Sw. Fiitwick (J.8.), 
Potton, Chicksands 
Scolopendrium vulgare, Symons. Toddington 
Ophioglossum vulgatum, L. Sandon (J.S.) 
Equisetum maximum, Lam. Barton (J.S.) 
Wilbury Hill 
?*Lycopodium clavatum, L. Potton Heath (Abbot) 
?*— inundatum, L. Ampthill (Abbot) 
Nitella mucronata, Kuetz. Sandy (J.S.) 
tTolypella intricata, Leonh. Near Sundon (J.S.) 
5. THe Cam District 
is very small and narrow and is bounded on the west by the Ivel district as already described, 
and on the east by Hertfordshire. As the water-partings are obscure, no part of the district 
being above 200 feet in altitude, it may be well to merge it in the Ivel district which it so 
closely resembles. 
6. Tue Ovzet District 
is in the south-west of the county and has for its eastern boundary the districts of the West 
Ouse and the Ivel district already described, but in the south it is separated from the Lea 
district by the Icknield Way from Chalton Cross by Houghton Regis to the Bucks boundary, 
which it touches above Edlesborough, and this county bounds it on the western side to 
Wharley End. 
This district is very varied in scenery as well as in its geological character. The streams 
which feed the Ouzel rise from the juncture of the Chalk with the impervious soil at its base, 
and cutting through the Upper Greensand and crossing the Gault also drain the picturesque 
country about Heath and Reach and Woburn Woods, which are on the Lower Greensand ; 
they finally pass through the country situated on the Oxford Clay, and that covered by the 
Ouse gravels. The latitude near Birdshill is 550 feet, at Toddington 485 feet, at Heath and 
Reach 460 feet, while no part appears to be below 200 feet. 
There are some boggy portions still left undrained near Aspley, also some interesting 
meadows with peat near Totternhoe, and the warm dry soil about Heath and Reach and 
Woburn affords a large number of ericetal species ; then the Chalk escarpment has its typical 
cretaceous vegetation, and its grassy slopes afford abundance of the rock-rose (Hekanthemum 
Chameecistus), the lady’s-fingers (Anthyllis Vulneraria), the horse-shoe vetch (Hippocrepis comosa), 
the milkwort (Polygala vulgaris), the carline thistle (Carlina vulgaris), the stemless and musk- 
thistles (Cuicus acaulis and C. nutans), the field ragwort (Senecio campestris), the yellow-wort 
(Blackstonia perfoliata), the marjoram (Origanum vulgare), the thyme (Thymus Chamedrys), the 
orchids Orchis pyramidalis, O. ustulata, Habenaria conopsea, etc., the bee orchis (Ophrys apifera), 
the grasses Bromus erectus, Avena pratensis, A. pubescens, Festuca ovina, F. rigida, F. rubra, 
Keeleria cristata), the squinancy wort (Asperula cynanchica), the Canterbury bell (Campanula 
glomerata) and the scabious (Scabiosa Columbaria). 
The arable fields on the Chalk have the candytuft (Iberis amara), the great earth-nut 
(Carum Bulbocastanum), the crimson poppy (Papaver hybridum), the rattle Rhinanthus major, 
if indeed this be correctly named, the bur parsley (Caucalis nodosa), the Venus looking-glass 
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