_Polypetalous_ is the counterpart term, to denote a corolla of _distinct_, that is, separate petals. As it means "many petalled," it is not the best possible name, but it is the old one and in almost universal use. _Gamosepalous_ applies to the calyx when the sepals are in this way united. _Polysepalous_, to the calyx when of separate sepals or calyx-leaves. 258. Degree of union or of separation in descriptive botany is expressed in the same way as is the lobing of leaves (139). See Fig. 249-253, and the explanations. 259. A corolla when gamopetalous commonly shows a distinction (well marked in Fig. 249-251) between a contracted tubular portion below, the TUBE, and the spreading part above, the BORDER or LIMB. The junction between tube and limb, or a more or less enlarged upper portion of the tube between the two, is the THROAT. The same is true of the calyx. 260. Some names are given to particular forms of the gamopetalous corolla, applicable also to a gamosepalous calyx, such as _Wheel-shaped_, or _Rotate_; when spreading out at once, without a tube or with a very short one, something in the shape of a wheel or of its diverging spokes, Fig. 252, 253. _Salver-shaped_, or _Salver-form_; when a flat-spreading border is raised on a narrow tube, from which it diverges at right angles, like the salver represented in old pictures, with a slender handle beneath, Fig. 249-251, 255. [Illustration: Fig. 248. Polypetalous corolla of Soapwort, of five petals with long claws or stalk-like bases.] [Illustration: Fig. 249. Flower of Standing Cypress (Gilia coronopifolia); gamopetalous: the tube answering to the long claws in 248, except that they are coalescent: the limb or border (the spreading part above) is _five-parted_, that is, the petals not there united except at very base.] [Illustration: Fig. 250. Flower of Cypress-vine (Ipomœa Quamoclit); like preceding, but limb _five-lobed_.] [Illustration: Fig. 251. Flower of Ipomœa coccinea; limb almost _entire_.] [Illustration: Fig. 252. Wheel-shaped or rotate and five-parted corolla of Bittersweet, Solanum Dulcamara. 253. Wheel-shaped and five-lobed corolla of Potato.] _Bell-shaped_, or _Campanulate_; where a short and broad tube widens upward, in the shape of a bell, as in Fig. 254. [Illustration: Fig. 254. Flower of a Campanula or Harebell, with a campanulate or bell-shaped corolla; 255, of a Phlox, with salver-shaped corolla; 256, of Dead Nettle (Lamium), with labiate _ringent_ (or gaping) corolla; 257, of Snapdragon, with labiate _personate_ corolla; 258, of Toad-Flax, with a similar corolla spurred at the base.] _Funnel-shaped_, or _Funnelform_; gradually spreading at the summit of a tube which is narrow below, in the shape of a funnel or tunnel, as in the corolla of the common Morning Glory (Fig. 247) and of the Stramonium (Fig. 246).