136 



CRUCIFERAE. 



[Vol.. II, 



24. LESQUERELLA S. Wats. Proc. Am. Acad. 23: 249. 1888. 



Low annual or perennial herbs, with stellate pubescence, simple leaves, and racemose 

 mainly yellow flowers. Petals entire. Anthers sagittate. Pod generally inflated, globose 

 or oblong; valves nerveless; septum translucent, nerved from the apex to the middle. Seeds- 

 several or many in each cell of the pod, flattened, marginless or narrow-margined; cotyledons 

 accutnbent. [Dedicated to Leo Lesquereux, 1805-1889, Swiss and American botanist.] 



A genus of about 35 species, natives of America, and mainly of the western parts of the United 

 States. 



Pods densely stellate-pubescent. 



Pods oblong, acute, 2" long; low perennial. I. L. spathulata, 



Pods globose, i" in diameter; tall annual. 2. L. globosa. 



Pods oval or subglobose, 2" long; tall biennial or perennial. 3. L. argentea, 



Pods glabrous or very nearly so. 



Annual, sparingly pubescent; stem slender, i-2 tall, much branched; southwestern. 



4. L. gracilis. 



Perennial, densely stellate; stem rather stout, 6'-i2 f tall, simple; western. 5. L. ovalifolia. 



T>A-A***I i f A r foil- ctAm cimnl**- atvto Q m ^ m at~CtiC(l. 



Perennial, i'-6' tall; stem simple; arctic. 



i. Lesquerella spathulata Rydberg. 

 Bladder-pod. (Fig. 1745.) 



Low 



Ltsauerella spathulata Rydberg, Contr. U. S. Nat. Herb. 3: 486. 

 1896. 



Perennial, tufted from a deep root, very finely canescent and 

 stellate, 4 / -5 / high; stems slender, generally numerous, simple. 

 Lower leaves oblanceolate or spatulate, 6 // -i2 // long, acutish, 

 narrowed into a petiole; the upper linear, mainly less than i" 

 wide; flowers yellow, about 2" broad; racemes rather few-flow- 

 ered; pedicels 3 // -6 // long, ascending, or recurved in fruit; pods 

 oblong or nearly globose, slightly compressed, acute, subacute 

 or rarely obtuse at each end, finely canescent, about i" long, 

 few-seeded, tipped with a style of about their own length; 

 septum commonly uu perforated. 



Dry hills, Nebraska and South Dakota to Montana and the North- 

 west Territory. June. 



2. Lesquerella globosa (Desv.) S. 



Wats. Short's Bladder-pod. 



(Fig. 1746.) 



Vesicaria globosa Desv. Journ. Bot. 3: 184. 1814. 

 Vesicaria Shortii T. & G. Fl. N. A. i: 102. 1838. 



Lesquerella globosa S. Wats. Proc. Am. Acad. 23: 

 252. 1888. 



Slender, erect or ascending, sparingly branch- 

 ing, 6 / -2o / high, finely stellate-pubescent all 

 over. Basal leaves obovate, l'-i %' long, obtuse ; 

 stem-leaves narrower, linear or oblong, smaller, 

 sessile, entire or with slightly undulate margins, 

 the lowest sometimes narrowed into a petiole; 

 flowers yellow; petals 2 // ~3 // long; pedicels slen- 

 der, spreading, 4 // -5 // long in fruit; raceme elon- 

 gating; pod nearly globular, i" in diameter, 

 glabrous when mature; seeds i or 2 in each cell; 

 style very slender, 2" long. 



In open places, Kentucky and Tennessee to east- 

 ern Missouri. April. 



