5. Wislizenia Engelmann in F. A. Wislizenus, Mem. Tour N. Mexico. 99. 1848.
Jackass-clover, spectacle-fruit [For Friedrich (later Frederick) Adolph Wislizenus, 1810-1889, botanical collector in southwestern United States and adjacent Mexico]
Gordon C. Tucker
Herbs, shrubs, or subshrubs, annual or perennial. Stems sparsely branched laterally; puberulent, glabrous, or glabrate (scabrid when dry). Leaves: stipules minute tufts of filiform hairs; petiole without pulvinus (equal to or longer than leaflets); leaflets (1 or) 3, (conduplicate). Inflorescences terminal, racemes (dense); bracts usually absent; (pedicels 3-5 mm, glabrous). Flowers: zygomorphic; sepals usually persistent (eventually deciduous), distinct, equal; petals slightly unequal (in pairs); stamens 6 (well-exserted, ± equal); filaments inserted on gynophore, glabrous; anthers (oblong), coiling after dehiscence; gynophore reflexed in fruit; (pistil 2-lobed basally, style filiform, eventually spinelike). Fruits schizocarps, indehiscent, obovate, (reticulate, ± tuberculate, valves disarticulating from persistent, round septum). Seeds 2(-4), globose, not arillate. x = 10.
Species 3 (3 in the flora): sc, sw United States, nw Mexico.
SELECTED REFERENCES Greene, E. L. 1906b. Revision of the genus Wislizenia. Proc. Biol. Soc. Wash. 19: 127-132. Keller, S. 1979. A revision of the genus Wislizenia (Capparidaceae) based on population studies. Brittonia 31: 333-351.