THE WILLOWS OF OHIO. 2 r >'.'> 



Synoptic Table of Ohio Willows. 



Stamens 3 or more, filaments pubescent at base, catkins appear- 

 ing on leafy branches. Polyandrae. 

 Trees with rough, flaky, brown bark and brown twigs. 



Amygdaleneae. 

 Capsules short pedicelled, short globose conic, forming dense 

 thin catkins; leaves green on both sides, glabrous, pri- 

 maries distant, very fine net veined, with a marginal 

 running nearly to the base of the leaf, linear-lanceolate 

 when mature, often falcate; of very scragly growth, 

 seldom upright; frequenting streams. S. nigra. 



Capsules long pedicelled, short conic, in lax aments; leaves 

 sometimes 15 cm. long, typically oblong with straight 

 sides, glaucous beneath, generally hairy, primaries 

 ascending, but scarcely forming a marginal; sprawling 

 shrub or straggling tree; southern, river banks. 



5. Longipes. 



Capsules long pedicelled, long conic, forming large loose 



catkins; leaves glaucous beneath, glabrous, primaries 



close, reticulation not so fine, marginal seldom running 



below the middle of the blade, broadly lanceolate, 



petiole often red; an elegant shapely tree; northern, 



prefers swamps. S. amygdaloides. 



Shrub, twigs shining brown, scales often dentate, capsules 



large and glossy, aments thick; leaves ovate-lanceolate, 



often very long attenuate, sub-coriaceous, glossy above, 



light green, glands very prominent, especially on stipules; 



mostly in rocky wet places, northern. 5. lucida. 



Stamens less than 3. 



Stamens 2. Diandrae. 



Filaments pubescent, catkins appearing with the leaves, 

 on leafy branches, except earlv flowers of 5. interior, 

 scales nearly as long as the ovularies at anthesis. 

 Large trees with bark rough but not flaky, leaves glaucous 

 below, capsules glabrous, short pedicelled. Fragiles. 

 Not weeping, primaries and secondaries close and 

 regular. 

 Bark greenish, leaves glabrous, rather coarsely ser- 

 rate, and strongly glandular; capsules long 

 conic, remaining green. 5. fragilis. 



Bark yellowish, leaves pubescent at least when 

 young, fine serrate; capsules short conic, turning 

 yellow in fruit. S. alba. 



Bark golden yellow, leaves glabrous in age 



5. albci vitellina. 



