About High-Ongar and Chipping-Ongar : Mr. Blackstonk.— Gloucestershire ; 
In Fairl'ord Marsh near Fairford: Mr. Dickson. — Hertfordshire ; In a boggy 
field near Caisshobcrry Park: Mr. Blackstonk . — Lancashire; In Bootle 
Marsh and Crosby Rabbit Warren, near Liverpool: Dr. Bosun k. — Leicester- 
shire ; Near Buddon Wood: Dr. Martyn. Near Grooby Pool: Rev. A. 
Bloxam. — Middlesex; Near Harefield Mill: Mr. Blacksioni . — Norfolk; 
Common in every boggy meadow: Mr. Woodward — Northamptonshire ; 
About Rov. el, and Thorp : Dr. Martyn. Jn boggy ground below the Red W ell 
ot Wellingborough: Mr. Goodyir. In marshy ground hv the side of a rill a 
few hundred yards to the left of the road leading from Norton to Dodford, near 
Daventry: Dr. Withering. — Nottinghamshire ; At Basford, Scottum, and 
Papplewick : Dr. Deerino. — Shropshire ; Canton Bough, Biidgenorth: Ham.. 
— Staffordshire ; AtBlymhill: Rev. S. Dickenson. — Suffolk; About Besset 
and Drinkstone: Parkinson. Near Bungay: Mr. D. Stock, in Mag. Nat. 
Hist. v. iii. p. 155. — Warwickshire ; Coleshill-bog, and Knowle: Mr. Purton. 
— In meadows at Penn’s Mill, near Eidington : Dr. Withering. Near Stone 
Bridge ; and in meadows between Bradnock’s Marsh and Beikswell, plentiful : 
Mr. Smith. Boggy meadows near Warwick : Rev. W. T. Bree. Noibiooke, 
and near Fern Hill: Mr. W. G. Perry. — Worcestershire ; Broomsgrove 
Lickey.and Feckenham Moors: Mr. Purton. — Yorkshire ; Plentiful in Lans- 
dall and Craven, and at Doncaster, and in Thornton Fields: Gerarde. Near 
Rotherham: Mr. L. Langley. And in a field near Richmond : L. E. O. in 
Mag. Nat. Hist. — Berwickshire ; Plentiful in the Castle Fields of Berwick-upon- 
Tweed: Gerarde and Mr. Winch. Holy Island Links: Mr. Winch. Com- 
mon in the neighbourhood of Berwick, paitieularly on Moors: Dr. Johnston. 
— WALES. 1 n moist meadows, not uncommon. — SCOTLAND. Loch Na- 
kiel, and head of Loch Awe: Dr. Bostock. Pentland Hills, abundant near 
the W’ater-house, and near Swauston Wood: Mr. Neill. King’s Park: Mr. 
Bainrridoe — IRELAND. In marshy grounds, frequent. Marsh under 
Killiney Hill, and low sandy grounds at Portmarnock, &c.: Mr. J. T. Mackay. 
Perennial. Flowers in August and September. 
Root small, whitish, fibrous. Stems from six inches to a foot 
high, upright, simple, angular, smooth, and somewhat twisted, each 
bearing one sessile, stem-clasping, entire leaf, a little below the 
middle ; and one white, very elegant flower, at the top. Root- 
leaves numerous, on long footstalks, heart-shaped, more or less 
pointed, quite entire, smooth, with several longitudinal ribs. Co- 
rolla about an inch wide, scentless. Petals broadly egg-shaped, 
white, and marked with greenish pellucid veins. Nectaries large, 
and very beautiful, alternating with the stamens, each an inversely 
heart-shaped, green scale, fringed with about thirteen filaments, 
which are tipped with yellow pellucid globules. Stamens about 
half the length of the petals, at first not longer than the germen 
(fig. 2.) , but as soon as the flower is expanded, one of the filaments 
gradually increases in length, and presents its anther over the stigmas, 
where it remains till it has shed its pollen, after which it recedes 
from the germen, and falls back to the petals. Thus, one stamen 
ha ing performed its destined office and retired, a second advances 
in like manner ; as also do the other three in succession, till the 
pollen of all is discharged, and the fructification of the seed thereby 
completed. From observations made in September 1828, on some 
plants of the Parnassia which were then in flower in the Oxford 
Botanic Garden, I found that each stamen occupied about twenty- 
four hours in elevating itself above the stigmas, and discharging its 
pollen ; after which it was about the same length of time retiring 
from the stigmas to the petals. Eight days elapsed between the 
opening of the flower and the receding of the fifth and last stamen 
from the germen. “ The time, however,” as is observed by Mr. 
Maund, in the Botanic Garden, “ will vary in proportion to the 
stimulus yielded to its powers of vegetation, by the less or greater 
supply of heat and moisture.” 
