MONOECIA. PitLYANDRfA. 213 



sipnally, or in a few species, altogether entire; flowers 

 verticiilaud by 3's, the upper ones inasculine, the lower 

 fewer .iikI feminine. Sa[) lactescent ? 



Species. 1. S. sagittifviia- jS. latifoUa. 2. obtusn. Mas-- 

 culine scape branched ut the base, bap lactescent, hard- 

 ening- into a while and hyaline gum. 3. haatata, Fh. j8. 

 gracilis- S. £-7'acilis, Ph. 4. pubcscens. Muld. Catah v. .•;. 

 in Herb. Muhh Tlie whole plant is pubescent; but still 

 apparently nothing- more than a variety of sagittifolia. 5, 

 hcterophijUa- 6. laiicifolia, S. falcata, Ph. and B./akatcii 

 Persoon, 2. p. 563. 7. rig-ida, Ph. 8. graminen, Mich, 

 S. simplex? Ph. 9. aciiii/Giia, Ph. Leaves acutely subui 

 lale, rigid, rarely natant; scape simple, lor.ger than the 

 leaves; flowers monoicous, ail pedunculate, female ones 

 3, stamina 12 to 15. .S'. acutifolia ? Lin. suppl. p. 419. ( Al- 

 so, indigenous to Surinam.) Hab. Extremely abundant 

 on the sliores of the Delaware, below tide water mark. 



10- * piid'.la. Leaves linear, obtuse and short, the sum- 

 mits foliaceous; scape simple, shorter than the leaves; 

 flowers monoicous, few; female flower solitary, deflected; 

 stamina mostly 7- Hab. With the above, in the vicinity 

 of Philadelphia. Misma subulata,'Pn. Probably not of Lin- 

 nseus, whose synonymn accords bet er with S. aciiiifoliat 

 ' of Pursh. Ods. The whole plant only 1 to 3 inches high; 

 leaves rarely ever subulate, sca^t-cely a line wide, and ob- 

 tuse; male flov.-ers. 3 to 6; female 1, recurved. Flower^ 

 ing in July and August. 11. nutans . 



Of this genus tliere are 2 other species, one of them 

 'n India, the other indigenous to tlie alpine lakes of Dau- 

 ria and scarcely distinct irom iS'. natan':. S. sagiUifo'.ia is 

 also common to Europe. 



5\. QUEilCUS. X. (Oak.) 



Ma.sc. CaiiX iTio.stiy S-clcft. Corolla none. 

 Stamina 5 to 10. Fem. Calix 1 -leaved, entire, 

 sctibi'ous. CorQlIa, no;ic. Styles -2 to 5. JS^ut 

 'oi* gland) coi i?.ceous, mostly surrounded at tiie 

 ba.se by tlie persistent calix. 



Trees or rarely shrubs; leaves deciduous or 5empervi= 

 rent, entire or sinnately lobed; aments axillary, pendu- 

 lous, nowers distinct. — (In Q. Sulci\ -Jie ba;kistiiick and 

 i'ur.gous, constituting tl-.e cork of commerce; the bark of 

 Q.. tinctcvia is the Quercitron so v%ell known as a material 

 far dyeing yellov%'; and the Gci-ls produced by the punc" 



