80 



GEEAKIUM FAMILY. 



§ 1. Leaves peltate and fleshy, the 5 lobes entire : stems trailing. 

 P. pelt&tum, Ivy -LEAVED P. Generally smooth, the leaf fixed towards 

 the middle, with or without a darkish zone ; flowers pink or varying to white. 



§ 2. Leaves round and crenate, very obscurely many-lobed and with a deep narrow 

 sinus : petals all of one color (scarlet, pink, or varying to white), the two 

 upper a little narrower than the ot/iers : stems erect, shrubby and succulent. 

 The two species greatly mixed. 



P. zonule, Horse-shoe P. So called from the dark horse-shoe mark or 

 zone, which however is not always present ; smoothish ; petals nari'owish. 



P. inCLUinans, Staining or Scarlet P. In the unmixed state is soft- 

 downy and clammy, the leaves without the zone ; petals broadly obovate, origi- 

 nally intense scarlet. 



§ 3. Leaves rounded, moderately if at all lohed : branches scarcely succulent : pet- 

 als never scarlet, the two upper more or less larger t/ian the tliree lower. 



• Leaves sweet-scented, velvety or soft-downy : flowers small : stems or branches 



herbaceous or half lierbaceous, spreading or straggling. 



P. capit^tum, Rose-scented P. Softly hairy, with the rose-scented 

 leaves moderately lobed, the lobes short and broad ; peduncle bearing many 

 sessile flowers in a head ; petals rose-purple, barely ^' long. 



P. tomeut6sum, Peppermint P. Densely soft-hairy ; branches long 

 and thickish ; leaves rather large, round-heart-shaped and with 5-7 open lobes, 

 velvety -hairy both sides ; flowers on long pedicels in panicled umbels, insignifi- 

 cant ; petals white, the 3 lower a little longer than the calyx. 



P. odoratissimum, Nutmeg-scented P. Branches slender and strag- 

 gling, from a very short scaly stem or base ; leaves rounded and crenate, soft- 

 velvety, small ; flowers on short pedicels, very small ; petals white, scarcely 

 exceeding the calyx. 



• * Leaves not sweet-scented: flowers large, pink, purple, white, ^c, the two 



upper petals longer and broader than the three lower and streaked or spotted: 

 shrubby and erect. (All much mixed.) 



P. CUeuUitum, Cowled P. Soft-hairy, the rounded kidney-shaped leaves 

 cupped, soft-downy. 



P. cord&tum, Heakt-leaved P. Like the last or less hairy, with flat 

 ovate-heart-shaped leaves. 



P. anguI6sum, Maple-leaved P. Harsher-hairy ; the leaves rigid, in- 

 clined to be lobed, truncate or even wedge-shaped at the base (scarcely ever 

 heart-shaped), shai-ply toothed. 



§ 4. Leaves decidedly lobed or cut, in some species compound or decompound, 

 * Smooth and pale or glaucous, rounded, palmately 5 - 1-clefl. 

 P. grandiflbrum, Great-flowered P. Shrubby; peduncles bearing 

 about 3 large flowers, with white petals li' long, the two upper larger and ele- 

 gantly veined or variegated with pink or rose-color. 



* # Silky-hoary, pinnately veined and somewhat pinnatifld. 

 P. tricolor, Three-colored P. Low, rather shrubby ; the long-petioled 

 small leaves lance-oblong ; peduncles bearing 2 or 3 showy flowers ; the three 

 lower petals white, the two upper crimson, with a dark spot at their base, and 

 rather smaller, ^' long : not common. 



« « * Sqft-lioary or velvety, palmately Z-parted, small: no obvious stipules. 

 P. exstipul^tum, Penny-Royal P. Low, rather shnibby ; leaves with 

 the sweet scent of Pcnn3'-Royal or Borgamot, J' wide, the lobes wed-e-shaped 

 and cut-toothod ; flowers small and insigniticant, white. ° 



• » * « Hairy, roughish, or downy : lemvs more or less pinnatifld or pinnately 



compound or the main lobes or divisions pinnatifld, balsamic or strong- 

 scented : stipules present. 



P. quercifolium, Oak-leaved P. Shnibby, hairy and Handular- 

 leaves deeply sinuate-pinnatifld, with wavy-toothed blunt lobes (the lowest 



