Spring Flora of Oklahoma 
73 
Flowers blue; plant glabrous. 
Flowers yellow. 
Flowers white or cream color. 
Very pubescent. 
3. B. bracteata. 
4. B. leucantha. 
1. B. australis. 
2. B. tinctoria. 
Glabrous or nearly so. 
1. Raptisia australis (L.) R. Br. Blue False Indigo. Stem 
glabrous, stout. Leaves short-petioled, 3-foliolate. Leaflets oblance- 
olate, obtuse at the apex, cuneate at the base, entire. Stipules lance¬ 
olate. Racemes terminal, erect, loosely-flowered, elongated. Bracts 
narrow, caducous. Flowers indigo-blue. Pods oblong, stalked in the 
calyx, tipped with the subulate style. 
In rich soil. May-August. Common. 
2. Raptisia tinctoria (L.) R. Br. Yellow Wild Indigo. Glab¬ 
rous, succulent, much branched. Leaves petioled, 3-foliolate. Leaflets 
obovate or oblanceolate, obtuse, cuneate at the base, entire. Racemes 
numerous, few-flowered, terminal. Flowers bright yellow. Pod ovoid 
or nearly globose, 3”-5" long, tipped with the subulate style. 
Dry soil. May-September. Murray County. 
3. Raptisia bracteata Ell. Large-bracted Wild Indigo. Low, 
hairy, and branching. Leaves sessile or short petioled, 3-foliolate. 
Leaflets oblanceolate or spatulate, narrowed or cuneate ar the base, 
obtuse or acutish at the apex, reticulate-veined. Racemes usually 
few, mainly lateral, reclinirg, many-flowered. Flowers white or 
cream colored, very showy. Bracts large and persistent. Pods ovoid, 
mostly narrowed at the base, pubescent, tipped with a long deciduous 
style. 
Prairies. April-May. Very common. 
4. Raptisia leucantha T. & G. Large White Wild Indigo. 
Glabrous, succulent, branching. Leaves petioled, 3-foliolate. Leaf¬ 
lets obovate or oblanceolate, very obtuse, rounded or emarginate at 
the apex, narrowed or cuneate at the base. Racemes lateral, loosely- 
flowered. Flowers white. Pod ellipsoid, long-stalked in the calyx, 
tipped with a subulate style. 
In rich soil. May-July. Hughes County. 
III. MEDICAGO (Tourn.) L. 
Herbs with small 3-foliolate leaves, and small, yellow 
or violet flowers in axillary heads or racemes. Leaflets 
commonly dentate, pinnately-veined, the veins terminat¬ 
ing in the teeth. Calyx teeth short, nearly equal. Stan¬ 
dard obovate or oblong, wings oblong, keel obtuse. Sta- 
