1336 



PIERIS 



moist, well-drained and porous soil, but dislike lime- 

 stone and heavy clay; a partly shaded situation suits 

 them best. Prop, by seeds treated like those of Azalea 

 or Rhododendron; also by layers, and the evergreen 

 ones by cuttings of almost ripened wood in August 

 under glass, kept during the winter in a cool green- 

 house. They root very slowly; cuttings taken from 

 forced plants root more readily. About 10 species in 

 N. Amer. and in Asia from Himal. to Japan. Calyx- 

 lobes valvate or distinct; corolla globose or urceolate; 

 stamens 10 ; anthers obtuse, with a pair of awns near 

 the base or the filaments 2-toothed below the apex: cap- 

 sule with 5 dehiscent valves ; seeds linear-oblong, not 

 winged, with membranaceotis testa. Often included 

 under Andromeda. Closely allied to Lyonia, but dis- 

 tinguished by its awnless anthers, and to Zenobia, which 

 has the anthers 4-awned at the apex. The foliage of 

 some species is said to be poisonous to cattle. 



A. Lvs, evergreen. 

 B. Flowers in terminal panicles formed the previous 



year and remaining naked 'during the winter: 



capsule globose, without ridges. 



floribunda, Benth. & Hook. (Andrdmeda floribunda, 

 Pursh. Portuna floribunda, Nutt.). Fig. 1800. Dense 

 shrub, 2-6 ft. high: branches and petioles with strigose 

 brown hairs: Ivs. ovate to oblong - lanceolate, acute, 

 minutely serrulate and setosely ciliate, otherwise gla- 

 brous, l%-2% in. long: fls. nodding, in terminal dense 

 upright panicles 1K-4 in. long; corolla ovate, strongly 

 5-angled, white, 34 in. long. April, May. Va. to Ga., in 

 the Alleghany Mts. B.M. 1566. B.R. 10:807. M.D.G. 

 1898:333. Very desirable evergreen shrub for its hardi- 

 ness and earliness of the fls. 



Japdnica, D. Don (Andrdmeda Japdnica, Thunb.). 

 Fig. 1801. Shrub, with spreading branches or some- 

 times small tree to 30 ft. : branches glabrous : Ivs. 

 crowded at the ends of branches, obovate-lanceolate or 

 oblanceolate, crenately serrulate, cuneate at the base, 

 glabrous, 1%-2K in. long : fls. in pendulous panicles, 



. long; corolla ovate, not angled, 34 in. or slightly 

 longer, April, May. Japan. R.B. 11:10. B.H. 21:19. 

 Gn. 12:98 and p. 424; 50, p. 307; 57, p. 399. G.C. II. 17:797. 

 M.D.G. 1898: 544. -Var. albo-marginata, Hort. Lvs. 

 with whitish margin and smaller. Var. pygmeea, Maxim. 



PILEA 



Dwarf form with small linear-oblanceolate Ivs. Japanese 

 botanists speak of a variety with the racemes a foot and 

 more long; this form seems to be not yet introduced, 

 P. Japonica is one of the most graceful early-blooming 

 evergreens. 



1801. Pieris Japonica (X 



BB. Fls. in axillary clusters, forming terminal leafy 

 racemes. 



nitida, Benth. & Hook. (Andrdmeda nitida, Bartr. 

 A. coriacea, Ait.). FETTER-BUSH. Shrub, 2-6 ft. high, 

 with triangular branches, quite glabrous: Ivs. obovate 

 or broadly elliptic to oblong, narrowed at both ends, 

 bright green and shining above, entire and slightly rev- 

 olute at the margin, l%-3 in. long: corolla cylindric- 

 ovate, white to pink, 34-% in. long: capsule ovoid glo- 

 bose, with ridges at the sutures. March-May. N. C. to 

 Fla. and La. B.M. 1095. -Var. rubra, Lodd. Fls. deep 

 pink. L.B.C. 7:672. 



AA. Lvs. deciduous. 



Mariana, Benth. & Hook. (Andrdmeda Mariana, 

 Linn. Lyonia Mariana, D. Don. Leucbthoe' Mariana, 

 DC.). STAGGER-BUSH. Shrub, 2-4 ft. high, glabrous or 

 nearly so: Ivs. oval to oblong, obtuse or acute, usually 

 cuneate at the base, entire, 1-3 in. long: fls. nodding, 

 in axillary clusters on leafless branches of the previous 

 year, forming 2-5 in. long racemes; corolla cylindric- 

 campanulate, white or pale pink, almost % in. long: 

 capsule ovate-pyramidal. April-June. R. I. to Fla. 

 B.M. 1579. 



P. formbsa, D. Don. Evergreen shrub or small tree, to 12 ft., 

 allied to P. Japonica: Ivs. scattered, broader, elliptic, 3-5 in. 

 long: panicles 6 in. or more long. April, May. Himalayas. 

 Gu. 54, p. 77. G.C. II. 15:569. P. ovalifblia, D. Don. Decidu- 

 ous shrub or tree, to 40 ft.: Ivs. ovate to elliptic, entire, pubes- 

 cent on the veins beneath, 2-6 in. long : fls. ovate, white, in 

 simple lateral racemes, 2-6 in. long. June. Himalayas to Japan. 

 About as hardy as P. Japonica. P. phillyeatfblia, DC. Ever- 

 green shrub, 1-2 ft., glabrous: Ivs. oblong, serrulate near the 

 apex, 1-2 in. long: racemes axillary, 4-12-fld.: corolla ovoid, 

 white. Feb., March. W. Fla. B.R. 30:36. 



ALFRED REHDER. 



PIGEON BERRY. Phytolacca decandra. 



PIGEON PEA. Cajanus Indicus. 

 PIGEON PLUM. See Coccoloba. 

 PIG-NUT. See Hicoria. 



PIGWEED. 



tus. 



Species of Chenopodium and Amaran- 



PILEA (pileus, a Roman cap; one of the segments of 

 the perianth in the first described species covering the 

 akene). Urticacece. Many tropical and some temperate- 

 region herbs (rarely shrubby), annual or perennial, of 

 various habit. Most of them are weedy plants, but 

 forms of one or two species are grown in greenhouses 

 for their compact fern-like sprays and for the interest- 

 ing phenomenon of forcibly discharging the pollen, 

 whence the name Artillery Plant. The species are 

 widely distributed in the Old and New World. The 



