PEN 



PEN 



sometimes by seeds : and the seventeenth rea- 

 dily strikes from cuttings: the eighli;enth pro- 

 duces seeds, but is more usually increased by 

 cutting's : and the nineteenth and twentieth are 

 readilv propagated in tne same way : the twenty- 

 first is likewise raised from cuttings, but they 

 are not very free in striking : the twenty-fourth 

 is raised 111 this manner without difficulty: but 

 in the twenty fifth, from the branches running 

 out specdilv into liowcring stalks, tcw are 

 formed proper for cuttings, and these are struck 

 with dilHciilty. 



All these plants are highly ornamental, and- 

 afford consideral)le variety in coileclions of 

 green-house plants. 



PELLITORV, BASTARD. Sec Achillf.as. 



PELLITOHY OF SPALV. See Anthemis. 



PENNY- ROYAL. See Mentha Pole- 



GIUM. 



PENTAPETF.S, a genus comprising a plant 

 of the exotic kind, for the stove. 



It belongs to the class and order Mnnadelphia 

 Dodtcandria, and ranks in the natural order of 

 Col/iHinifercB. 



The characters are : that the calyx is a double 

 perianthium : outer three-leaved, one-sided, 

 caducous : lea'iets linear, acuminate : inner 

 one-leafed, five-parted, permanent : segments 

 lanceolate, acuminate, spreading, longer than 

 the corolla : the corolla has live paals, roundish, 

 spreading, fastened to the pitcher of stamens: the 

 stamina liave fifieen filaments, filiform, upright, 

 shorter than the corolla, united below into a pen- 

 tagon pitcher, but free above : anthers sagittate, 

 upright : ligules five, linear-lanceolate, petal- 

 shaped, upright, each between every three sta- 

 mens, springing from the pitcher : the pistillum 

 has an ovate germ : stvle filiform, thickened 

 above, striated, longer than the stamens, per- 

 manent : stigma obsoletely five-toothed : the 

 pericarpium is a membranaceous capsule, sub- 

 globular, acuminate, five-celled, five-valved : 

 partitions contrary; the seeds eight, ovate, acute, 

 four on each side, fastened within side to the 

 partition. 



The species is P. Fhccnicea, Scarlet-flowered 

 Pentapetcs. 



It is an annual plant, which dies in the au- 

 tumn soon after it has ripened seeds : it has an 

 upright stalk from two to near three feel high, 

 sending out side branches the whole length : 

 those from the lower part of the stalks are the 

 lontjest : the others gradually diminish, so as to 

 form part of a pyramid. They are garnished 

 ■with leaves of diflerent forms ; the lower leaves, 

 which are largest, are cut on thdr sides towards 

 the base into two side lobes which are short, and 

 the middle is extended two or three inches 

 1 



further in length, so that the leaves^ greatly re- 

 semble the point") of haiberts in their shape ; they 

 are s',ighil\' serrate, and of a lucid green on- 

 their upper side, but paler on theirunder, stand- 

 ing upon pretiy long footstalks: tiie leaves 

 which are on the upper part of the branches are' 

 much narrower, and some of them have very 

 small indentures on iheir'sides ; they sit closer 

 to the stalks, and are placed alternately : the 

 flowers are axillary; they come out for the most 

 part singly, but sometciiies there are two arising 

 at the same place from the side of the footstalk 

 of the leaves: the peduncle is short and slender; 

 thev are of a fine scarlet colour, appearing ia- 

 July. It is a native of India. 



Culture. — This plant may be increased l)y 

 sowing the seeds upon a good hot-bed early in 

 March ; and when the plants are fit to remove 

 there should be a new hot-bed prepared to re- 

 ceive them, into which must be plunged some 

 .small pots filled with good kitchen-garden earth; 

 into each of which one plant should be put, 

 giving them a little water to settle the earth to 

 tlieir roots, shading them from the sun till they 

 have taken new root; when they should be 

 treated in the same way as other tender exotic 

 plants, admitting the free air to them every dav 

 in proportion to the warmth of the season, and 

 covering the glasses with mats every evening. 

 When the plants are advanced in their growth 

 so as to fill the pots v^ith their roots, they 

 should be shifted into larger pots, filled with 

 the same sort of earth as before, and plunged 

 into another hot-bed, where they may remain 

 as long as they can stand under the glasses of 

 the bed without being injured ; and afterwards 

 they must be removed either into a stove or 

 a glass-case, where they may be screened from 

 the cold, and in warm weather have plenty of 

 fresh air admitted to them. 



These plants are sometimes turned out of the 

 pots, when they are strong, and planted in warm 

 borders; where, if the season prove very warm, 

 the plants will flower tolerably. 



PENTS TEIMON, a genus containing plants 

 of the hardy herbaceous flowering kind. 



It belongs to the class and order Didyno.mia 

 An'^iosperm'.a, and ranks in the natural order of 

 Penoualae. 



The characters are : that the calyx is a one- 

 leafed perianthium, five-parted, permanent : 

 segments lanceolate, almost equal: the corolla 

 one-pelalled, two-lipped : tube longer than the 

 Cdly\, gibbous above at the base, wider at top, 

 and there ventricose underneath : upper lip up- 

 right bifid ; segments ovate, blunt, sliorler than 

 the lower lip: lower Up three-parted ; segments 

 ovatej blunt, bent down, shorter than the lube s 



