MONOECIA. POLTANDRIA. 221 



Calix 4 cleft, superior. Corolla none. Styles 

 none. Stigma partly discoid, 4-lobcd. Peri- 

 carp 4-valved. A'*nt subquadrangular, even. 



Lira;'e trees vvUli alternate and unequally pinnalecl 

 leaves; flowers polygamous, contemporaneous, (the same 

 bud iiicludinp^ both sexes togetiier with leaves); female 

 ones terminal, male amenis below the leaves, trifid, pe- 

 dunculate and pendulous; anthers pilose, didymousj nuts 

 edible or bitter. Pubescence stellate. 



Species. 1. G. oUv^formis. (Pecan nut.) 2 sulcata, 

 Obs. Leaflets 5 to 9, oblong'-lanceulale, acuminate, ser- 

 rate, under side pubescent, terminal leaflet subpeliolate- 

 attenuated at tiie base. Male aments 3-parted, very !on^ 

 pedunculate and smooth; scales 3-parted, incurved, tb.e 

 central segment longer and acuminated. Stamina 4 to 6; 

 ?.nthers didymous, sessile, pilose and chartaceous, some- 

 times subtended by an inner caliclne scale from the ra- 

 chis. Female calix 4-cleft. Corolla none. Style none. 

 Stigma discoid, 4-lobed, 2 of the lobes larger and bifid, 

 summits compressed, externally lacerate. 



3. alba. 4. t:)m-:ntosa. Oes. Aments irifid, in voIucratCj 

 very long and hirsutely villous, scales 3-parted, subequal; 

 anthers 3 or 4, pubescent. Female calix 4-cleft. Corolla 

 none. Stigma as in the preceding. /3 * maxima. JUeaf- 

 lets by r's, ovate-lanceolate, acuminate, serrulate, beneath 

 softly pubescent and paler coloured, terminal leaflet sub- 

 petiolate; fruit partly globose, pericarp exceedingly thick, 

 riut quadrangular, very large and thick shelled, mucr;* 

 quadrangular, exsertedand truncate. Hab. A few miles 

 from Philadelphia. Fruit nearly twice the ordinary size, 

 as large as an apple. 



5. * microcarpa. Leaflets about 5, oblong-lanceolate, 

 sharply serrulate, and conspicuously acuminate, on both 

 sides smooth, beneath glandular, terminal leaflet subpe- 

 tiolate; fruit subglobose, pericarp thin; nut partly quad- 

 rangular, small and rather thin shelled, mucro obsolete, 

 truncate, Hab. On the banks of the Schuylkill, in the 

 vicinity of Pliiladclphia. — A. large tree v;ith an even bark. 

 Fruit much like that of C toineutosa, and eatable, but very - 

 small, the nut not exceedmg the size of a r,utmeg, 

 Aments trifid, very long and smooth, without involucrunr.; 

 scales 3-parted, lateral segments ovate, the central one 

 linear; anthers pilose, mostly 4, sometimes 5 and 5. Fe- 

 male 2 or 3 together, common peduncle bracteolate; seg- 

 ments of tb.e calix very long and somewhat foliaceous. 

 Corolla none. Style none. Stigma discoid, 4-Iobed. 



