Thlaspi Bursa pastoris. Shepherd's Purse. 



THLASPI Ltntuei Gen. PL Tetradynamia Siliculosa. 



Sillcula emarginata, obcordata, polyfperma : valvulis navicularibus, margi- 



nato-carinatis. 

 Rail Syn. Gen 21. Herb;e tetrapetalje siliquos^e et siliculosje. 

 THLASPI Burfia pajlorls filiculis obcordatis, foliis radicalibus pinnatifidis. Linnai Syfi. Vegetab. p. 491* 



Spec. PL 903. FL Suecic. 227. 

 NASTURTIUM filiqujs triangularibus, Hatter hlft. v. 1. p. 221 

 P ASTORIA BURSA Fujchii Icon. 611. 



BURSA Px'VSTORIS major folio finuato. Bauhln Pin. 108. Gerard emac. 276. Parklnfionl Theat. 866. 



Rail Syn. 306. Hudfion. FL Angl. 247. Scopoll. FL CarnioL v, 2. 17. 



RADIX annua, fibrofa, albida. J ROOT annual, fibrous and whitim. 



CAULIS pedalis, ereftus, ramofus, teres, fubafper. $ STALK about a foot high, upright, branched, round, 



I a little prickly. 



FOLIA radlcalla hirfutula, pinnatifida, laciniis quoad % LEAVES : radical leaves flightly hirfute, pinnatifid, 

 formam mire variantibus, caulina amplexicaulia, | the lacbias or jags varying exceedingly in 



dentata. % their form ; the upper leaves embracing the 



I ftalk, and indented at the edges. 



% 



PEDUNCULI uniflori, demum fere horizontales. | PEDUNCLES, fupporting one flower on each, nearly 



I horizontal when the flowers are gone off. 



% 

 CALYX: Perianthium tetraphyllum, foliolis ovatis, | CALYX: a Perianthium of four leaves, the leaves 

 concavis, fubpilofis, margine membranaceis, | oval, hollow, flightly hairy, and membranous 



fig. 1. I at the edges, jig. 1. 



COROLLA: Petala quatuor alba, calyce paulo Ion- $ COROLLA: four white Petals, a little longer than 

 giora, apice rotundata, fig. 2. | the Calyx, round at top, fig. 2. 



STAMINA : Filamenta fex, alba, quorum quatuor ? STAMINA : fix white Filaments, four of which 

 longitudine Styli, duo breviora incurvata ; An- f are of the fame length as the Style ; two 



therje flavae, fig. 3. $ are fhorter and bent a little inwards : An- 



t therje yellow, fig. 3. 



t 

 PISTILLUM: Germen oblongo-cordatum ; Stylus ? PISTILLUM :Germen of an oblong heart-map cjStyle 



breviflimus ; Stigma villofum, fig. 4. very fhort ; Stigma villous, fig. 4. 



PERICx^RPIUM : Silicula lzevis, obcordata, bivalvis, ¥ SEED-VESSEL; a fhort fmooth pod, triangular or 

 fig. c. I heart-Jhaped, with two valves, fig. 6. 



i 



pEMINA plurima, pedicellata, flavefcentia, margini | SEEDS numerous, of a yellowifh colour, ftanding on 

 Diffepimenti affixa, Jig. 6. | little foot-ftalks, which connects them to the 



t edge of the Diflepimentum or Partition, fig. 6. 



f 

 PISSEPIMENTUM utrinque acutiirn Valvis contrari- y PARTITION pointed at both ends, placed crofs-ways 

 um, f to the Valves, 



THE radical leaves of this plant differ fo exceedingly in their appearance, that the moil expert Botanirt is 

 often obliged to have recourfe to its mo(l {Inking character, the Ihape of its Seed-veflels, before he can with 

 certainty diitinguifh it. When it grows on walls and in dry filiations, the leaves are more deeply divided, and 

 the Lacjniae become much narrower ; in cultivated ground they are broader and lefs jagged : It differs likewife 

 no lefs with repeat to its fize, fometimes being not more than two or three inches high, and at other times 

 as many feet. 



March and April are the months in which it is found; moft generally in blofTom, yet like the Groundfiel and 

 Poa annua, it may be found in this ftate at almofr. any time of the year, 



It acquires its name of Shepherd's Pouch or Purfe, from the particular ihape of its pods, by which it is ob- 

 vioufly diftinguhned from all our other Tetradynamous plants. 



The plant is collected and given to fmall birds, who appear to be very fond of the feeds, and this is the 

 only ufe to which we at preient know of its being applied. 



