PEN [ C: 



P. sarcoco'lla (thick-necked). 1. June. 1825. 

 sfjuumo'su (scaly). 1. June. 1787. 



PENNYROYAL. Me'ntha pnle'glum. 



PENTADE'SMA. (From pente, five, and 

 desma, a bundle ; referring to the dispo- 

 sition of the stamens. Nat. ord., Gutli- 

 fers [Clusiaceae]. Linn., 18-Polyadelphia 

 '2-Pulyandria. Allied to Garcinia.) 



Stove evergreen tree. Cuttings of ripe shoots 

 in sand, under a bell-glass, and in bottom-heat ; 

 fibry loam and sandy peat. Winter temp., 60; 

 summer, 60 to 90. 



P. butyra'cea (butter-and-t'illow-tree). 3U. No- 

 vember. Sierra Leone. 1822. 



PEXTA'PETES. (From pente, five, and 

 petalon, a petal ; five petals in the flower. 

 Nat. ord., Byttne.rinds [Byttneriacese]. 

 Linn., 16 - Monadelphia 7 - Dodecandria. 

 Allied to Dornbeya.) 



Stove, scarlet-flowered plants, flowering in July- 

 Cuttings of half-ripened shoots in sand, under'a 

 glass, in moist heat; also by seeds in a hotbed, in 

 spring ; sandy loam and leaf-mould. Stove tem- 

 peratures. 

 P. ona'ta (egg-leai-cd). 2. New Spain. 1805. 



phasni'cea (scarlet). 2. India. 1690. 



PENTARA'PHIA. (From pente, five, and 

 r aphis, a needle ; alluding to the form of 

 the open calyx. Nat. ord., Gesnerworts 

 [Gesneracesej. Linn., \k-Didynamia 2- 

 Angiospermia. ) 



A warm greenhouse plant. For cultivation, see 

 GE'SJNERA. 



P. Cuie'r.sis (Cuban). 2. Scarlet. July. Cuba. 

 1854. 



PE'NTAS. (From pente, five ; referring 

 to the number of petals and stamens. 

 Nat. ord., Cinchonads [Cinchonacese]. 

 Linn., 5-Pentandria 1-Monoyynia.} 



Stove evergreens, from South Africa, with pink 

 flowers. Cuttings of young shoots in sandy soil, 

 in a hotbed; sandy loam and fibry peat. Winter 

 temp., 45 to 58; summer, 6() to 75. Propa- 

 gated in spring, in a hotbed, the plants so raised 

 Mill bloom freely in the greenhouse during the 

 summer. 



P. ca'rnea (flesh-coloured). l. May. 1842. 



parviflo'ra (small-flowered). 2. May. 



PENTLA'NDIA. (Named after J. P. Pent- 

 land, Esq., consul-general in Peru. Nat. 

 ord., AmaryUtds [Amaryllidaceae]. Linn., 

 Ci-Hexandna 1-Monoyynia.) 



Half-hardy Peruvian bulbs; offsets; sandy 

 ]o:im, peat, and leaf-mould ; require protection, or 

 jilting out of the ground in winter. 

 P. minia'ta (red-lead-coloured). 1. Red. Sep- 

 tember. 1836. 



lucuno'sa (pitted). 1. Red. September. 



1836. 



Suliva'nica (Sulivan's). 1. Orange. March. 



1839- 



PENTSTE'MON. (From pente, five, and 

 stemon. a stamen ; four fertile and one 

 40 



5 J PEN 



abortive stamen. Nat. ord., Figicorts 

 [Scrophulariacese]. Linn., \-Didyna- 

 mia 2-Angiospermia. Allied to Chelo'ne.) 

 Seeds sown in a hotbed, in spring, the plants 

 will bloom in the flower-garden the same summer ; 

 division of the plant in spring, as growth com- 

 mences ; cuttings of the young shoots any time 

 in spring, summer, Or autumn, under a har.d- 

 lisiht, in snndy soil ; sandy loam and leaf-mould. 

 Gentianoi'des and its varieties, cocci'nea and a'lbn, 

 require a little protection in winter, when north 

 of London ; a few fir-boughs and some moss 

 among the plants will generally be sufficient ; but, 

 to make sure, a few cuttings should be kept over 

 the winter in a cold pit. 



HALF HARDY HERBACEOUS. 



P. a'tro-purpu'reum (dark purple). l. Diuk 



purple. July. Mexico. 1827. 



azu'reum (blue -flowered). . Blue. June. 



Mcxiro. 1848. 



bacchnrifd tiiis (baccharis-leaved). l. Crimson. 



August. Texas. 1851. 



campanula' turn (bell-flowered). 1A. Lilac, 



purple. June. Mexico. 1794. 



Coboe'a (Cobcen-flowered). 2. Pale purple. 



Texas. J835. 



Gentianui'des (Gentian-like). 4. Purplish-blue. 



July. Mexico. 1846. 



Harlwe'gii (Hartweg's). 2j. Double purple. 



June. Mexico. 1825. 



dia'phanum (transparent). 2^. Rose. 



Scarlet. July. Mexico. 1843. 



Ku'nthii (Kunth's). l. Purple. Mexico. H-25. 



rninia'tus (vermilion). 1. Vermilion, rose. July. 



Mexico. 1846. 



pulcht'llum (pretty). l. Lilac. June. Mexico. 



1827. 



rn'seum (rosy). l. Rose. Mexico. I??.T. 



Wri'ghtii (Mr. Wright's). 2. Ko&e. June, 



Texas. 1850. 



HARDY HERBACEOUS. 



P. acumina'tum (pointed-team^). Purple, July. 

 N. Amer. 1827. 



a'lbidvm (whitish). g. White. July. Missouri. 



1823. 



angustifit'lium (narrow - leaved). 1^. Lilac, 



purple. August. Louisiana. 1811. 



argu'tum (neat). 3. Blue. Columbia. 1825. 



attenua'tniu (wasted). Cream. July. N. 



Amer. 1827. 



breviflit'rum (short-flowered). 2. White, pink. 



September. California. 



confe'rtum (crowded-flowered). 2. Pale yellow. 



July. N. Amer. 1827. 



craasi/o'lium (thick-leaved). 1. Blue. June. 



"N. Amer. 



deu'stum \ blasted). 1. Cream. N. Amer. 182". 



diffu'sum (spreading). 1^. Purple. September. 



N. Amer. 1826. 



digita'/is (foxglove-like). !, White. August. 



Ai Kansas. 1824. 



eriantht-'rum (woolly -anthered). ^. Purple. 



Anuust. Louisiana. 181 1. 



glabc'rrhaum (smoothest). 2. Blue. Columbia, 



1835. 



gla'bmm (smooth), li. Dark purple. August- 



Lc.uisiana.* 18J1. 



glandulo'sum (glanded). 2. Pale blue. June. 



N.Amer. 1827. 



glau'cwn (milky- green). 1. Pale lilac. July. 



N.Am<'7. ls'2/. 



Gordo'ni (Gordon's). 1-i. Sky blue. June. 



Rocky Mountains. " 1845. 



2 s 



