TETRADYNAMIA. 433l 



3'orae 4. singula intra cal}'cis foliohj squannse instar 

 leflexae. 



531. lURRITIS. Siliqua longissima, angulata, striata. 



Cat. connivens, erectns, Pclala erecta. 



532. BPiA-SSICA.. Cal. erectuSj connivens. D'lssepiwcn- 



tum prominens. Sem. globosa. Glandula inter sta- 

 mina breviora et calycem. Silujua teres, rostrata. 



533. DENTAllIA. Silicjua elastice dissiliens. valvniis re- 



volutis. Disscpimcntum subfungosu-m. Stigma emar- 

 ginatum. Cal. connivens, 



** Calyx hia?is, folioUs superne distanlihns. 



534. CARDAMINE. SiUqna elastice dissiliens, valvulls 



revolutis. Stigma integrum. 



535. SISYMBRIUM. Siliqua rostro brevi tereti dehiscens, 



valvniis rectiusculis. Corolla patens. 

 53G. CIjEOME, Glandules nectaril'erae 3. ad singulam 

 sinum calycis singula, excepto intinio. Pctala onniia 

 adscendentia. Germen stipitatum. Siliqua 1-loeula- 

 ris, 2-valvis. 



I. SILICULOSJ. 



520. DRABxV. Gen.pL lOjG. 



1. D. scapo nudo, foliis oblongis acutis subserratis hirtis, verna, 

 , petalis bitidis, stigmate sessili. — Willd. sp. pi. 3. 



p. 42 Q. 



Icon. F/. «Vjw. 983. Engl. lot. 5S6. 



In cultivated grounds and old fields : Canada to Virginia, 

 . March — May. v. v. All the species of this ge- 

 nus are sinall plants with white^flowers. 



2. D. scapo nudo, foliis ovalibns acutis liirsutissimis, silica- hiapidula, 



lis longo-linearibus glabris approximatis. — Mich. JL 



amer. 2. p. 2S. 

 D. caroliniana. IFult.Ji. car. 174. 

 In sandy fields : Virginia and Carolina, and on the banks 



of the Missouri. ©. April— June. v. v. 



3. D. scapo subunifolio adscendente, foliis lanceolntis inte- nivalis. 



gerrimis subtcmentosis : pilis stellatis, petalis retusis. 

 — IVilld. sp. pi. 3. p. 427. 



