148 FABACEAE 



Leaflets elliptic, acute at both ends, cuspidate at the apex. 



13. L. pauciflorus. 

 Leaflets narrowly linear. 14. L. tenuior. 



Stipules narrow, le'ss than half as long as the leaflets. 



Leaflets elliptic to oval. l.-i. L. decaphyllus. 



Leaflets linear-oblong or oblanceolate. 16. L. brachycalyx. 



Corolla white or yellowish. 

 Tendrils well developed. 



Stipules large and broad, often half as long as the leaflets; corolla about 15 mm. 



long. 17. L. ochroleucus. 



Stipules smaller, much less than half as long as the leaflets; corolla about 20 mm. 

 long. 18. L. laelivirens. 



Tendrils reduced; stipules narrow and small. 

 Corolla about 15-20 mm. long. 



Leaflets ovate or oval or obovate. 19. L. obovatus. 



Leaflets linear or lance-linear. 4. L. ornatus. 



Corolla 10-15 mm. long. 



Leaflets oval. 20. L. leucanthus. 



Leaflets linear. 21. L. arUonicus. 



44. AFIOS Moench. Ground-ndt. l. A. Apios. 



45. STROPHOSTYLES Ell. Wild Bean. l. S. pauciflora 



Family 66. GERANIACEAE. Geranium Family. 



Carpels rounded, their tails (styles) glabrous within, merely recoiling at maturity; leaves 

 m ours palmately veined and lobed. 1. Geranium. 



Carpels spindle-shaped, their tails (styles) pubescent within, spirally coiled at matm-ity; 

 leaf-blades in ours pinuately veined, pirmately lobed or dissected. 2. Brodium. 



1. GERANIUM (Tourn.) L. Cranebill, Wild Geranium. 



Petals 2-7 mm. long, at most slightly exceeding the calyx; plants annual or bieimial, or 

 sometimes perennial in G. thermale. 

 Sepals not bristle-tipped; seeds smooth. 



Carpels wrinkled; stamens 10.- 1. G. molle. 



Carpels finely pubescent; stamens 5. , 2. G. pusillum. 



Sepals awn-tipped; seeds reticulate or pitted. 

 Awn-tips less than 1 nun. long. 



Seeds reticulate; pedicels sUghtly hirsute, not glandular. 3. G. thermale. 

 Seeds pitted; pedicels glandular-pubescent. 4. G?. rotundifolium. 



Awn-tips 1-2 mm. long. 



Be&k and branches of the style less than 3 mm. long. 5. G. carolinianum. 

 Beak and branches of the style more than 4 nun. long; inflorescence open. 



6. G. Bicknellii. 

 Petals 1-3 cm. long; plants perennial, with rootstocks or caudices; seed reticulate. 

 Petals white; style-column and carpels glandular. 



Leaf-blades thin, sparingly hirsute beneath; upper petioles retrorsely hirsute or 



glabrous ; sepals sUghtly if at all glandular. 7. G. Richardsonii. 



Lieaf-blades thick, strigillose beneath; upper petioles canescent; sepals densely 

 glandular-pubescent. 

 Leaf-blades with long lanceolate lobes; veins of the petals very strong. 



8. G. nenosum. 

 Leaf-blades with short ovate lobes ; veins of the petals rather weak. 



17. G. Cowenii. 

 Petals purple or rose. 



Plants with simple rootstocks or caudices; stem erect and simple below; style- 

 column glandular-pubescent. 

 Stem and petioles glandular- viscid ; petals strongly veined. 



9. G. viscosissimum. 

 Stem and petioles retrorsely hairy, not glandular-viscid. 



Petioles of the upper leaves minutely puberulent; petals strongly veined. 



10. G. strigosuin. 

 , Petioles of the upper leaves with long hairs; petals faintly veined. 



Stem nearly glabrous, sparingly hirsute; leaves short-strigose; inflor- 

 escence open. 11. G. incisum. 

 Stem and leaves densely hairy; inflorescence congested. 



12. G. canum. 

 Plants with cespitosely branched caudices; stems usually diffusely branched. 

 Petals obcordate to broadly obovate, Ught purple, with darker veins. 

 Stem glandular-villous with long spreading hairs. 



Divisions of the leaves much longer than broad, with ovate or lanceolate, 



acute teeth. 13. G. Parryi. 



Divisions of the leaves about as broad as long, with broadly ovate, 

 abruptly short-acuminate teeth. 14. G. Pattersonii. 



Stem, petioles, and calyx with short grayish pubescence. 

 Pedicels and style-column densely glandular-pubescent. 



Leaves with broadly ovate teeth ; petals distinctly emarginate. 



15. G. Fremontii. 

 Leaves with lemceolate or lance-ovate teeth; petals scarcely emar- 

 ginate. 16. G. caespitosum. 



