W GEEANICM FAMILY. 



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



P. peltatum, Ivy-leaved P. Generally smooth, the leaf fixed towards 

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



§ 2. Leai'es round and crenatc, very obscurely inany-lobed and with a deep narrow 

 sinus ; petals all of one color -[scai-let, pink, or varying to white), the two 

 upper a Utile narrower tiiK-n the others : stents erect, shrubby and succulent. 

 The two species greatly mixed. 



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

 zone, which however is not always present ; smoothish ; petals narrowish. 



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 succident ; pet- 

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

 * Leaves stoeet-scented, velvety or soft-downy : flowers small : stems or branches 

 herbaceous or half lierbacecfus, spreading or straggling. 



P. capitktum, 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-pui-ple, barely ^' long. 



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

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

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

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



P. odoratissimum, Nut.heg-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-scentsd : 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. cucTiUitum, Cowled P. Soft-hairy, the rounded kidney-shaped leaves 

 cupped, soft-downy. 



P. COrdatum, Heart-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- 

 chned 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, palmatdy5 - 7 -cleft. 

 P. grandiflirum, 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 pink or rose-color. 



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

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

 small loaves lance-oblong ; peduncles bearing 2 or 3 showy flowei-s ; the three 

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

 rather smaller, ^' lon^ : not common. 



* * * Sqft-hoary or velvety, palmate'y 3-parted, small : no obvious stipules. 

 P. exstipulS,tum, Penny-Royal P. Lo\<f, rather "shrubby; loaves with 

 the sweet scent of Penny-Royal or Bergamot, i' 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 pinnatifld, balsamic or strong- 

 scented: stipules present. i 



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

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



