~ aes *S 
1900 SUPPLEMENT—RECENT INTRODUCTIONS, 
&Cs 617 
Potentilla—continued. 
7., radical ones palmately five- to seven-cleft ; cauline ones three- 
lobed, the lobes oblong, scarcely toothed at apex. Stem firm, 
sub-erect. h. 1ft. Pyrenees. 
P. aurea (golden). #. saffron-yellow, loosely sub-corymbose ; 
petals obovate; peduncles filiform. Summer. /., radical ones 
palmately five-cleft, obscurely pilose, the lobes broadly obovate, 
toothed, cuneate; stipules lanceolate. Stem bending down- 
wards. Alps. 
P. a. ambigua (ambiguous). 7. larger than the type. J. ter- 
nately palmatisect ; segments three-toothed. Stems ascending, 
few-flowered. Plant hairy. 
P. colorata (coloured). A synonym of P. nepalensis. 
P. davurica (Dahurian). A form of P. fruticosa. 
P. davurica-fruticosa (hybrid). This is described in the 
“Kew Bulletin” as a hybrid ‘between the two species named ” ; 
but as, according to the “Index Kewensis,” P. davurica is 
synonymous with, or a form of, P. fruticosa, the hybrid named 
is apparently a form of the latter species. 1896. It has the 
lobes of the leaves ternately or quinately pinnatisect. 
P. flagellaris (whip-like). #. yellow, solitary on axillary 
eduncles; petals obovate, entire. June. J. all five-cleft; 
eaflets lanceolate, acute, argutely serrated. Runners filiform, 
pubescent. A. 2in. Siberia, 1820. 
P. Friedrichseni (Friedrichsen’s). A garden hybrid between 
P. fruticosa and its form davurica. 
P. EL eed (Hipp’s). jl. as in P. pennsylvanica. July. 
7, leatlets narrow-oblong, approximate but scarcely crowded, 
silky above, silvery-canescent beneath, pinnatitid-serrated ; 
stipules entire or somewhat toothed. h. 14ft. North-west 
America. Formerly classed as a form of P. pennsylvanica. 
P. hirta (hairy). #7. pale yellow, paniculate, more or less 
distant. 1. palmately cleft into five to seven obovate, more or 
less toothed or pinnatifid lobes, the lateral ones pedate or 
cuneiform, three-toothed at apex. Stems ascending. South 
Europe. 
P. micrandra (small-anthered), j. dark yellow. /. pinnate. 
Japan, 1896. A bush about half as tall as P. fruticosa. 
P. multifida (much-cleft). 7. yellow, as large as those of 
P. verna, corymbose. July. 7. somewhat palmately bipinnati- 
sect ; lobules oblong-linear, revolute, hoary-tomentose beneath ; 
stipules entire. h. bin. Switzerland, Siberia, &c., 1759. 
P. nepalensis pallida (pale). A variety with pale flowers, 
introduced by Messrs. Paul in 1890. 
P. nitida. Of this plant there are many varieties, including 
atrorubens, with large rosy-purple flowers; grandiflora, with 
flowers more than lin. across and of a soft pink; and rosea, 
deep rose-coloured flowers, darker towards the centre. 
P. palustris (marsh-loving). The correct name of P. Coma- 
rum. 
P. parvifolia (small-leaved). #. yellow. July and August. 
Siberia, 1896. A dwarf, much-branched shrub. 
P. recta (erect). J. palmately cleft; lobes broad, acutely 
toothed ; stipules broad, coriaceous, more or less deeply toothed. 
Otherwise like P. hirta, h.1ft. South Europe, 1644, 
P. rupestris (rock-loving). Rock Potentil. jf. pure white, 
few, rather large, forming a loose, irregular corymb. May and 
June. /. chietly radical, pinnate; leaflets five or rarely seven, 
ovate, toothed. A. 6in. to 10in. Europe (Britain), &c. 
P. splendens (splendid). #. having the sepals broader. 
1, leaflets ternate or quinate, broader, and silky-pilose above. 
Otherwise like P. alba, France. 
P. Valderia (Valderia). . yellowish-white; petals obovate, 
shorter than the calyx. Summer. /., radical ones palmately five- 
to seven-cleft, with obovate-cuneiform, toothed tomentose lobes . 
cauline ones five-cleft; floral ones clustered-corymbose. Stem 
sub-erect, few-flowered. Alps of Piedmont. 
Varieties. Many beautiful hybrids, Single, Double, 
and Semi-donble, are now procurable. They vary through 
the shades of yellow to the darkest crimson. The 
following are noteworthy : 
ARC EN CIEL, ATROSANGUINEA, BIGARRURE, CALIFORNICA, 
CANDIDAT, CAPELLA, CARNIVAL, CENDULLON, CHROMATELLA, 
CONGO, DRAP D'OR, ETNA, HOPWOODIANA, IMBRiICcATA, LA NvIT, 
LE VESUVE, MARS, MONT D'OR, PURPUREA PLENA, ROSEFLORA, 
St. BLAISE, WILLIAM ROBINSON. 
POTERIUM. P. caudatwm and P. spinosum are 
now classed under Bencomia (which see). 
POTHOS. To the species described on p. 213, 
Vol. III., the following should be added: 
P. angustatus (narrowed). A synonym of Anthurium angus- 
tatum. 
P. argenteus (silvery).* /. ovate, acuminate, inequilateral, of 
firm texture; upper surface silvery-grey, with an irregular 
band of deep green extending nearly the whole length of the 
ee and an irregular margin of the same colour. Borneo, 
Vol. V. 
Pothos—continued. 
P. argyrzeus is synonymous with Scindapsus pictus. 
P. bifarius (bifarious). The correct name of P. celatocaulis. 
Syn. P. flexwosus (of gardens). 
P. crassinervius (thick-nerved). 
Hookeri. 
P. elongatus (elongated). J. ovate-elongated, 12in. to 14in. 
long, 6in. to 10in. broad, coriaceous, dark, shining green. 1885. 
This is useful for covering walls, &c. Probably a species of 
Scindapsus. 
P. Enderianus (Ender's). 
Borneo, 1884. 
P. flexuosus (bent). 7. alternate, oblong, with an acuminate, 
deflexed apex, and a few alternate, elongated ribs. Stems 
flattened, rooting. 1884. This species is now classed under 
Anthuriwm. 
P. flexuosus (of gardens). A synonym of P. bifarius. 
P. Loureiri (Loureiro’s). 7. very variable, from ovate-acuminate 
to lanceolate; petioles leaf-like, linear-lanceolate to oblanceo- 
late, lsin. to 6in. long. Philippines and China. A glabrous 
climber. 
P. nigricans (blackish). 7. spreading, 5in. to 6in. long, 
shining blackish-green. 1886. An ornamental climber, suitable 
for covering pillars or trellis-work. 
P. nitens (shining). 7. ovate, acute, slightly and unequally 
cordate at base, dark, shining bronzy-purplish-green. Stems 
A synonym of Anthurium 
1. of a sombre metallic black. 
terete. Eastern Archipelago, 1887. 
P. rubrinervis (red-nerved). A synonym of Anthurium rubri- 
nervium. 
P. scandens (climbing). 7. very variable, 2in. to 4in. long, 
sin. to 2in. broad, obovate or lanceolate, acute, apiculate, 
or acuminate, cuneate or rounded at base; petioles lin. to 
3in. long, the base half-amplexicaul. Stem as thick as the 
little finger, much-branched. India, 1821. 
POTHUAVA. Included under Hchmea (which see). 
P. nuilicaulis glabriuscula (R. G., t. 1096) is a glabrous 
variety of . nudicaulis. 
POURRETIA. P. nivosa and P. surinamensis are 
garden names for Tillandsia tectorum and T. pulchra 
respectively. 
PRAIRIE DOCK. ‘See 
aceum. 
PRAIRIE ROSE. See Rosa setigera. 
PREMNA. Gumira is synonymous with this genus. 
PREMORSE. See Premorse. 
PRESCOTTIA. The following changes in nomen- 
clature from that adopted on p. 216, Vol. III., may be 
noted : 
P. plantaginifolia (Plantain-leaved). 
P. plantaginea. 
P, stachyodes (spike-like). The correct name of P. colorans. 
PRESTOEA CARDERI. The correct name of 
Geonoma Carderi (which see). (B. M. 7108.) P. trini- 
tensis is grown at Kew, but is not in general cultivation. 
PRICKLY CEDAR. See Cyathodes acerosa. 
PRICKLY DATE PALM. See Acanthophenix. 
PRICKLY RHUBARB. See Gunnera. 
PRICKLY THRIFT. See Acantholimon. 
PRICKWOOD. ‘See Cornus sanguinea and 
Euonymus europeus. 
PRIESTLEYA. P. ericefolia is referred by modern 
botanists to the genus Amphithalea (which see), under 
the same specific name. 
PRIMULA. Those specially interested in Primroses 
should consult the ‘‘ Report of the Primula Conference,”’ 
forming Vol. VII., No. 2, of the “Journal of the Royal 
Horticultural Society,’’ 1886. The most important of 
recent monographs, however, is the excellent one of 
Dr. Pax, of Breslau (1888), entitled “* Monographische 
Uebersicht iiber die arten der Gattung Primula.” 
P. admontensis (Admont). /., calyx coloured, pubescent ; 
corolla lobes lilac, cordate; scape erect, twice as long the 
leaves, few-flowered. May. J. spathulate-ovate, dentate-serrate 
on the margins, glandular-pilose. Roots tufted. Styrian Alps, 
1883. A hybrid between P. Auricula and P. Clusiana, found 
on limestone rock with its parents. SyNs. P. Churchiilii, 
P. Clusiana dentata. 
P. algida (cold). 7. purplish, shortly pedicellate ; corolla salver- 
shaped, with deeply bifid, cordate lobes; scape three- or 
4K 
Silphium terebinth- 
The correct name of 
