[Vol. 8 
186 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
March 31, 1905, Tracy 9196 (U. S. Nat. Herb. and Mo. Bot. 
Gard. Herb.). 
Typical L. gracilis is characterized by the nearly globose pods 
borne on long, slender stipes. It is a rather polymorphic and 
weedy plant and is evidently common in fields and waste places 
throughout its range. On the north it passes gradually into the 
variety repanda. The one specimen cited for Missouri is typical 
gracilis and represents probably an introduction from farther 
south, since it was collected upon a railroad embankment and 
has not been confirmed by other collections from this state. 
The species and its varieties occur, at least in part, upon cal- 
careous soils. 
26a. Var. repanda (Nutt.) Payson, new comb. 
Vesicaria repanda Nutt. in Torr. & Gray, Fl. N. Am. 1: 101. 
1838; Walp. Rep. 1: 141. 1842; Dietr. Syn. Pl. 3: 639. 1843; 
Gray, Bost. Jour. Nat. Hist. (Pl. Lindh.) 6: 148. 1850; Walp. 
Ann. 2:38. 1851. 
Vesicaria Nuttall Torr. & Gray, Fl. N. Am. 1: 101. 1838; 
Walp. Rep. 1: 141. 1842; Dietr. Syn. Pl. 3: 639. 1843; Gray, 
Bost. Jour. Nat. Hist. (Pl. Lindh.) 6: 148. 1850; Walp. Ann. 
2: 38. 1851. 
Lesquerella repanda Wats. Proc. Am. Acad. 23: 252. 1888; 
Wats. in Gray, Syn. Fl. N. Am. 1': 119. 1895; Small, Fl. South- 
eastern U. S. 470. 1903, and ed. 2, 470. 1913. 
L. Nuttall Wats. Proc. Am. Acad. 23: 252. 1888; Wats. in 
Gray, Syn. Fl. N. Am. 1': 119. 1895; Small, Fl. Southeastern 
U. S. 470. 1903, and ed. 2, 470. 1913. 
Alyssum repandum Kuntze, Rev. Gen. Pl. 2: 931. 1891. 
A. Nuttallii Kuntze, Rev. Gen. Pl. 2: 931. 1891. 
Lesquerella gracilis Petersen, Fl. Nebraska, 62. 1912. 
Annual; stems branching; radical leaves sinuate-dentate to 
lyrate; cauline leaves numerous, repandly dentate; petals yellow; 
fruiting inflorescence elongated; pedicels horizontal to ascend- 
ing; pods erect, glabrous, obpyriform, frequently with a distinct 
shoulder near the base, 5-6 mm. long, borne on a slender stipe 
1-2 mm. long; ovules 5-8 in each cell. 
Distribution: northeastern Arkansas, southeastern Kansas, 
Oklahoma, and north central Texas. 
