CLASS XXI. ORDER V, 115 



globose : calyx tubulous, 3 or 4-toothed : germ be- 

 coming fleshy, clavate, prominent: styles lateral: 

 seed 1, covered by the calyx. 50. 99. — papyrifera^ 

 (paper mulberry) leaves lobate or undivided. ^.e« 



Order V. Pentandria. 



Hamiltonia. Perfect flowers — calyx superior 

 5 -cleft : corol : nectary with a 5 -toothed disk : sta- 

 mens 5 : pistil 1 : fruit a drupe. Staminate flow- 

 ers like the perfect, except in wanting the pistil — 

 oleifera^ (American oil-nut) leaves oblong, racemes 

 spike-like hairy. ^ . 



Zanthoxylum. Staminate flowers — calyx 5- 

 parted : corol : stamens 3 to 5. Pistillate flow- 

 ers — pistils 3 to 5 : capsules equal to the number 

 of pistils, 1-seeded. 46.94 — -fraxineum^ (prickly ash, 

 or tooth-ache tree) leaves pinnate, leafets ovate ob- 

 scurely serrate, umbels axillary. \. Among a 

 great number of these plants which I examined 

 near Yale and Williams* Colleges, I have never 

 been able to find a staminate flower. 



Spin AG I A. Staminate flowers — calyx 5-parted : 

 corol 0. Pistillate flowers — styles 4 : seed 1, with- 

 in the indurated calyx. 12. 29 — oleracea^ (spinach) 

 fruit sessile, unarmed or sessile. 0. w. e. 



AcNiDA. Staminate flowers — calyx 5-parted : 

 corol 0. Pistillate flowers — calyx 3-parted : style 

 0: stigmas 3, sessile : capsule 1-seeded. 53. 29 — 

 cunnabina, (water-hemp) leaves lanceolate, cap- 

 sules slender acute-angled. 0.-^ruacocar/iay cap- 

 sules obtuse-angled. (§. 



HuMULus. Staminate flowers — calyx 5-leaved: 

 corol 0. Pistillate flowers — calyx 1 -leafed, entire, 

 oblique, spreading: styles 2: seed 1, within the 

 leaf-like calyx: inflorescence strobile-form. 53. 93 

 -^hcfiiilusj (hop) stem twining dextrorsum 



Cannabis. Staminate flowers— calyx 5-parted. 

 L 



