TETRADYNAMIA. 
fero; 4. singula intra calycis foliola^ sqnamce instar 
reflexae. 
531. TURRITIS. Siliqua longissima, angulata, striata. 
Cal. connivens, erectus. Petala erecta. 
532. BRASSICA. Cal. erectus, connivens. Dissepimen- 
prominens. globosa. Glandula \vAex 
mina breviora et calycem. Siliqua teres, rostrata. 
533. DENTARIA. Siliqua elastice dissiliens, valvulis re- 
volutis. Dissepimentum subfungosum. Stigma emar- 
ginatum. Cal. connivens. 
Calyx hians, foliolis superne distantibus. 
534. CARDAMINE. Siliqua elastice dissiliens, valvulis 
revolutis. Stigma integrum. 
535. SISYMBRIUM. Siliqua rostro brevi tereti dehiscens, 
valvolis recliusculis. Corolla patens. 
530. CIvEOME. . Glandulce nectariferje 3. ad singulora 
sinum calycis singulae, excepto infimo. Petala omnia 
adseendentia. Germen stipitatum. Siliqua 1-locuia- 
ris, 2-valvis. 
I. SILI GULOSA, 
520. DRABA. Gen.pl. 1076 . 
1. D. scapo nudo, foliis oblongis acutis subserratis hirtis, 
petalis bifidis, stigmate sessili. — WilLd. sp. pL 3. 
p. 476. 
Icon. Fl. dan. 983. Engl. lot. 580. 
In cultivated grounds and old flekls : Canada to Virginia. 
©. March- — May. v.v. All the species of this ge- 
nus are small plants with white flowers. 
2. D. scapo nudo, foliis ovalibus acutis hirsutissimis, silicu- 
lis longo-llnearibus glabris approximatis, — Midi. Jl. 
amer. 2. p. 23. 
D. caroiiniana. lValt.fi. car. 1/4. 
In sandy fields : Virginia and Carolina, and on the banks 
of the Missouri. ©. April — June. v.v. 
3. D. scapo subunifolio aclscendente, foliis lanceolatis inte- 
gerrimis subtomentosis : pilis stellatis^ petalis retusis. 
— IVilld. sp. pi. 3. p. 427 , 
433 
verna. 
hispidula. 
nivalis. 
