80 GEBANItJM 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 dai-kish zone ; flowers pink or varying to white. 



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



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



upper a little narroiver than tlie others ; 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 naiTOwish. 



P. inquinans, 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 lobed; branches scarcely succulent : pet- 

 als never scarlet, the two upper more or less larger than the three lower. 

 » Leaves sweet-scented, velvety or so/i-downy : flowers small : stems or branches 



herbaceous or half herbaceous, spreading or straggling. 

 P. capitktum, Rose-sce^jted 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. tomentdsum, Peppermint P. Densely soft-hairy ; branches long 

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

 velvety-hairy both sides ; flowers on long pedicels in paniclcd 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-scenfsd : flowers large, pinh, purple, white, Sfc, tlie two 

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

 shrubby and erect. (All much mixed.) 



P. CUCuU^tum, 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. anguldsum, 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), sharply toothed. 



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

 * Smooth and pale or glaucous, rounded, palmately 5 - T -cleft. 

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

 about 3 large flowers, with white petals 1^' long, the two upper larger and ele- 

 gantly veined or variegated with piuk or rose-color. 



» » Silky-hoary, pinnately veined and somewhat pinnatifid. 



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. 



» » * Soft-hoary or velvety, palmately 3-parted, small : no obvious stipules. 



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

 the sweet scent of Penny-Royal or Bergamot, ^' wide, the lobes wedge-shaped 

 and cut-toothed ; flowers small and insignificant, white. 



» * # « Hairy, roughish, or downy : leaves more or less pinnatifid or pinnately 

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

 scented : stipules present. 



P. Ciuercif61iuin, Oak-leaved P. Shrubby, hairy and glandular ; 

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



