Calyx regular, in the fertile flower succulent in fruit. [Urticaceæ], [461]

Calyx none, or rudimentary and scale-like.

Style and stigma one, simple; the flowers in heads. [Platanaceæ], [466]

Styles or long stigmas 2.

Fertile flowers 2 or 3 at each scale of the catkin. [Cupuliferæ], [470]

Fertile flowers single under each scale; nutlets naked, waxy-coated or drupe like. [Myricaceæ], [469]

Subclass II. GYMNOSPERMÆ. Pistil an open scale or altered leaf, bearing naked ovules on its margin or its upper surface, or in Taxus entirely wanting. Flowers monœcious or diœcious. [Coniferæ], [489]

Class II. MONOCOTYLEDONOUS PLANTS. (See [p. 15.])

A. Spadiceous Division. Flowers aggregated on a spadix or fleshy axis, or sometimes scattered, destitute of calyx and corolla (excepting some Araceæ and Naiadaceæ, where, however, they are on a spadix), and also without glumes (husky scales). Leaves sometimes with netted veins.

Little floating aquatics, with no distinction of stem and foliage. [Lemnaceæ], [551]