12 PAPAVERACEJi. 



o. Petioles glabrous at the top ; anther*cells broad-linear, exceeding in breadth the lining 

 connectival margin. 



0. amazonum, Mart., Zucc. Petioles encircled at the top by a ring of hairs j anther-cells 

 narrow-linear, equalling in breadth the flat connectival margin. — Bot. Mag. t. 4823.— N. 

 alba, Lun. — A form of this, with the leaves young and quite entire, is the original specimen 

 of N. blanda, Mey.!, agreeing exactly with N. amazonum, as figured by Sir W. Hooker; but 

 Meyer's name, applied to a particular form, which is not the same with N. blanda of later 

 authors, is perhaps better suppressed altogether. — Hab. Jamaica I, March (a and j8) ; [Gua- 

 deloupe!, Guiana!, Brazil]. 



IX. NELUMBONE.E. 



"Flower-organs distinct from each other, indefinite. Carpids immersed in special cavities 

 of the torus, which is enlarged above the stamens : ovules 1 (-2), pendulous. Embryo exal- 

 buminous : cotyledons fleshy, surrounding the developed plumule. — Water-plants , leaves 

 peltate, entire, emersed, arising from a creeping root-stock : vernation involute ; flowers 

 large, solitary. 



The use is the same as that of Nymphaacece. 



1. NELUMBIUM, Juss. 



1. N. luteum, W. Petals pale-yellow ; anthers produced at the top into a linear, re- 

 curved appendage. — As. Gray, Gen. Bor. Am.er. 1. 1. 40, 41. — N. jamaicense, DC. Nymphaia 

 Nelumbo, Lun. (exclus. syn.). — Leaves exactly peltate : petiole tubercled. The appendage of 

 the anthers sometimes seems to be wanting in this genus, but is only apparently so, falling 

 off by a sort of dehiscence. — The Jamaican specimens are not different from those of the 

 United States; but the bad figures, published by Desconrtilz (Fl. 8. t. 599) and by Tussac 

 (JR. 3. t. 23), have probably not been taken from West Indian specimens, for they present 

 pink or rosy flowers, and must be referred to the Asiatic N. speciosum. — Hab. Jamaica!, 

 M'Nab, in the lagoons of S. Catherine; [eastern territory of the United States!]. — I have 

 been told that the original N. jamaicense, found in the district of Vere, where it has disap- 

 peared since, was believed to produce rosy flowers ; but P. Brown says nothing of their 

 colour, and Lunan, who states them to be purple, borrowed his description from Loureiro 

 and Thunberg, and, having made no observations of his own, confounded the N. jamaicense 

 with N. speciosum. 



X. CERATOPHYLLE^l. 



Flowers naked, monoecious. Carpel solitary : ovule single, pendulous, atropons. Embryo 

 exalbuminous, with a highly developed plumule. — Water-plants ; leaves submersed, whorled, 

 dichotomously divided into capillary segments. 



1. CERATOPHYLLUM, L. 



1. C. demersum, L. Nuts, with two spines or tubercles at the base, exceeded by » 

 beak. — Linnaa, 11. t. 11. — Organs of flowers solitary; male organs amentaceous: anthers 

 dehiscent by a pore. — Hab. Jamaica !, Pd., March, common; Trinidad!, Cr.; [northern 

 temperate and tropical zones of all continents, e.g. Cuba 1 to Guiana]. 



XL PAPAVERACE^E. 



Sepals 2 (-3), caducous. Stamens hypogynous. Pistil mostly paracarpous. Embryo mi- 

 nute, included in the top or axis of the oily endosperm. — Leaves simple, without stipules. 



The milk of this Order is known to contain either admirable narcotic alkaloids, or acrid 

 principles. It is yellow in Bocconia, and becomes so, when exposed to the air, in Argemone. 

 The investigations hitherto pursued into the medical properties of this milk and their oily 

 seeds (which are devoid of milk) have, however, given contradictory results. 



1. ARGEMONE. L. 

 Sepals 2-3. Petals 4-6. Stamens indefinite. Carpels 4-7 : stigmas opposite to the 



