*760 TETRADYN AMI A. SILICULOSA. Thlaspi. 
Perfoliate Shepherd’s-purse. T. alpestre. Huds. In limestone pas¬ 
tures, rare. Abundant in the stone-pits between Witney and Burford, 
and on Burford downs, Oxfordshire. Bobart. Sir J. E. Smith suspects 
other British stations to be erroneous, the northern ones especially 
belonging- to T. alpestre. E.) A. April—May. 
T. alpes'tre. (Pouch, obovate: stem-leaves arrow-shaped: stems 
simple: style extended : root long, fibrous, but not creeping. E.) 
E. Bot. 81— Clus. ii. 131. 3— Tabern. 854. 19— Ger. Em. 268. 2— Ger. 210. 
7— Park. 837. 8 —Thlaspi perfoliatum minus. Ray Syn. 305. 6. 
Root-leaves forming a tuft. Stem single, central, flowering early; but 
should the plant have been'eaten down by cattle, other lateral stems 
sometimes afterwards shoot up, flowering later. Petals white, about the 
length of the calyx. Anthers purplish. Seeds three or four in each cell. 
E. Bot. 
Smith observes, that Hudson’s T. montanum, (inserted in the earlier Editions 
of this work, on the authority of Ray and Curtis, as growing near Settle, 
and in many mountainous pastures between that place and Mai ham, E.) 
is certainly the T. alpestre of Linn, and that his T. alpestre is T. perfolia¬ 
tum of Linn .; but it should be remarked, that Ray, in his Synopsis, p. 
365, No. 4 and 6, also records two species, referring to the same figures 
which Linnseus in the Sp. PI. has quoted to T. montanum and T. alpestre. 
He likewise particularly notices the creeping root of T. montanum , a cir¬ 
cumstance inapplicable to T. alpestre. 
(Alpine Shepherd’s Purse. T. alpestre. Linn. T. montanum. Huds. 
With. G®Urt. T.foliis Globularios. Ray: according to Smith. Pastures 
above the ebbing and flowing well, two miles from Giggleswick, York- 
shire, in stony ground among the grass. Merret. On moist lime¬ 
stone pastures in Westmoreland and Cumberland. Nicholson. Lime¬ 
stone rocks at Matlock. Smith. (About Pont Nedd Vachn and Aberper- 
gam, Glamorganshire ; Mr. Dillwyn : also near Wince Bridge, Durham. 
Rev. J. Harriman. Bot. Guide. Near Nentwater, on the Moors, rare. 
Mr. Winch. By the side of a dingle, called Nant Bwlch yr Hiarn, about 
a mile from Llanrwst bridge, and not more than twenty yards from the 
turnpike road leading to Conway. Mr. Griffith. E.) B. July. 
T. Bursa-pastq'ris. (Plant hairy: E.) pouches compressed, some-* 
what triangular, inversely heart-shaped, without a border: 
radical leaves pinnatifid. 
Ludw. 186— Curt. —( E . Bot . 1485. E.)— Blackw. 5— Wale. 5— Bod. 103. 1 
— Lob. Ohs . 110. 1, and Ic. i. 221. 1— Ger. Em. 276. 1— H. Ox. iii. 20. 
row 1. 2— Pet. 49. 4, 5, 6 and 7— Ger. 214. 1— Fuchs. 611— Trag. 215— 
J. B. ii. 93 6—Lonic. i. 139. 1 —Park. 866. 1—Matth. 569. 
Leaves fringed with fine hairs. Stem-leaves , the upper entire, strap-spear¬ 
shaped, embracing the stem. Bunches long, flatted at the top, terminal. 
Calyx hairy. Petals entire, white. Summit circular, fringed, concave. 
Anthers a little woolly. Germen egg-shaped, compressed, with a channel 
down the middle. 
This plant affords a strong instance of the influence of soil and situation, 
for it grows almost every where, and sometimes is not more than two 
inches high when it flowers and perfects its seeds; w T hilst in other situa¬ 
tions it attains the height of two or three feet. Linn, The plants of this 
