MONOECIA.— MONADELPHIA, 82$ 



tile ft,. Cal. 4-cleft, superior. Cor. 0. Styles 

 ; stig. subdiscoid, 4-lobed. Pericarp 4- 

 valved. Nut subquadrangular, even. 

 56k ARUM. Spaihe 1 -leaved, cucullate. Cal. and 

 Cor. 0. Spadix naked above, bearing sessile 

 anthers below the middle, and germens at the 

 base. Berry 1-celled, many-seeded. 



562. LECONTIA* Spaihe convolute. Cal and Cor. 0. 



Spadix covered with flowers, fertile at the base, 

 sterile above. Berry 1 -seeded. 



563. CALLA. Spath ovate, somewhat flattened. Spa- 



dix covered with flowers ; barren and fertile in 

 mixed. Cal. and Cor. 0. Berry many-seeded. 

 . 



MONADELPHIA. 



564. PINUS. sterile fl. Scales peltate. Cal. and 



Cor. 0. Anth. 2, sessile, 1-celled. fertile 

 fl. in an ovate or conical strobile ; scales 

 closely imbricate, 2-flowered. Cor. 0. Nut 

 winged, covered by the scales of the cone. 



565. THUYA, sterile fl. Ament imbricate. Cal, 



and Cor. 0. Anth. sessile, 4. fertile fl. 0. 

 Strobile with the scales 2-flowered. Cor. 0. 

 Nut 1, winged. 



566. CUPRESSUS. sterile fl. in an ovate ament ; 



scales peltate. Cal. and Cor. 0. Anth. 4, ses- 

 sile, fertile fl. Strobile with the scales pel- 

 tate. Cal. and Cor. 0. Germens 4 — 8 under 

 each scale of the strobile. Nuts angular, com 

 pressed. 



567. ACALYPIIA. sterile fl. Cal. 3— 4-parled. 



Cor. 0. Slam. 8 — 16. fertile fl. Cal. 3- 

 leaved. Cor. 0. Styles 3. Caps. 3-celled 

 Seed 1 in each cell. 



568. PIIYLLANTHUS. sterile fl. Cal. 5—6- 



parted. Filam. often columnar ; anth. 3. fer- 

 ; ii i i r . resembling the sterile. Nectary a 12- 

 angled margin. Styles 3. Caps, mostly 3-grained. 



569. MELOTHRIA. sterile fl. Cal. 1 -leaved, 3— 



* A nciv genus proposed by Mr. W. Cooper, and named in- 

 lonom- of C »pt. I-ecoote of the U. S. A. 



E e 2 



