POLEMONIACEZ. 
Prettiest Greek- Valerian. 
foot. 
7 P. Ricwarpsonu (Graham, in edinb. phil. journ. dec. 1827. 
bot. mag. 2800.) stems pilose, angular, branched at the base, 
leafy; leaves pinnate; leaflets ovate-roundish, mucronulate, downy 
beneath ; flowers nutant; calyx villous, viscid, with ovate, 
pointed segments ; segments of corolla obtuse, crenulated ; root 
very long, somewhat fusiform. %. H. Native of North Ame- 
riea, in deep sandy soil, about the Great Bear Lake, Richard- 
son; and of Siberia. P.speciósum, Fisch. mss. P. coerüleum, 
var. nana, Hook, in Lin. trans. 14. p. 3877. Root yellow. Stem 
purplish at the base. Flowers in terminal corymbs; but droop- 
ing. Corolla with a yellow tube, and a pale purple limb, marked 
with deeper veins. P. specidsum, Fisch. mss. from the islands 
of St. Lawrence and St. Paul; and P. lanàtum, Fisch. mss. from 
Kamtschatka, is a variety of the same, with more downy stems. 
"Richardson's Greek-Valerian. Fl. July, Oct. Clt. 1826. 
Pl. 3 foot. 
8 P. moscua‘tum (Wormkiold, mss. ex Graham, edinb. phil. 
journ. June 1820.) stems diffuse, branched; leaves pinnate, 
slightly downy, rather fleshy; leaflets roundish-cordate ; calyx 
hairy, with obtuse segments ; segments of corolla obtuse. XY. 
H. Native of North America, Drummond. Root fibrous. 
Stems angular, reddish. Leaflets about 10 pairs; those of the 
cauline leaves oblong-ovate, the terminal one obovate in both. 
Flowers paniculately corymbose, somewhat drooping, nearly 
inodorous ; peduncles generally 2-flowered, sometimes drooping. 
Peduncles, pedicels, calyxes, and stem clothed with glandular 
down. Corolla with blue limb, having deeper veins, indistinctly 
crenated. Hooker considers this plant the same as P. Richard- 
sónii. 
Musky-scented Greek- Valerian. 
Pl. 3 to 4 inches. 
9 P. vizrósux (Rudolf, Georgi, besch. des. russ. reichs. 3. p. 
771. Sweet, fl. gard. t. 266.) stem pilose, angular, erect ; 
leaves with many pairs of leaflets, which are ovate-bluntish, 
pilose on both surfaces; flowers a little panicled, drooping ; 
segments of corolla roundish, crenulated. 2. H. Native of 
Siberia, Kamtschatka, &c. P. lanàtum, Fisch. mss. P. hümile, 
Roem. et Schultes, syst. 4. p. 792. Lindl. bot. reg. 1304. Pol. 
ccerüleum, 9, Gmel. sib. 4. p. 103. no. 69. Stem leafy. Calyxes 
villous and viscid; with ovate-bluntish segments. Corollas 
blue. Perhaps only a variety of P. Richardsonii. 
Villous Greek-Valerian. Fl. July, Oct. Clt. 1826. Pl. i 
foot. i y 
10 P. Mexica‘num (Cerv. 
in Lagasc. gen. et spec. nov. 
diagn. p. 10. no. 140, Ker. 
bot. reg. 242.) plant viscid, and 
clothed with glandular down on 
every part; leaves pinnate, 
downy ; leaflets lanceolate ; 
outer ones combined, usually 
forming a 38-lobed, terminal 
leaflet ; flowers drooping ; calyx 
clothed with clammy villi. 27 .H. 
Native of Mexico. P. ciliàtum, 
P. bursifolium, P. pimpinelloi- 
des, Willd. mss. ex Roem. et 
Schultes, syst. 4. p. 793. Flow- 
ers corymbose, pale blue. Plant 
very pale green. Mr. Nuttall 
found this, or a nearly allied species at Flat-Head river, in 
which the leaflets are somewhat rhomboid-ovate, acutish ; and 
the calycine segments oblong, acute. Mr. James also found it 
Fl. July, Aug. Cit.1827. Pl. 4 
Fl. May, June. Clt. 1827. 
FIG. 26. 
I. Poremonium. 
239 
on the banks of the Canadian river; but the flowers in his 
plant are said to be smaller. 
Mexican Greek Valerian. 
1 foot. 
11 P.? cizià row. (Willd. mss. ex Roem. et Schultes, syst. 4. 
p. 792.) leaves pinnatifid, hairy, ciliated ; segments of corolla 
ciliately toothed. 2t. H. Native of Pennsylvania, Muhlen- 
burgh. Leaves sessile, with acute segments. Flowers terminal, 
racemose. Calycine segments linear, ciliated, acute, length of 
corolla. Perhaps a species of Eutóca. 
Ciliated-leaved Greek-Valerian. Pl. 
12 P. nz'erANs (Lin. spec. 230.) root creeping ; stems leafy, 
glabrous; leaves pinnate; leaflets 7, ovate, acute, glabrous ; 
flowers nutant; segments of corolla cuneate. 4. H. Na- 
tive of North America, from Pennsylvania to Carolina, on 
the sides of rich hills. Mill. fig. t. 209. Sims, bot. mag. 
1887. Leaflets 7 to 11 in number. Flowers in a loose, pani- 
cled corymb. Flowers blue, and sometimes white. 
: da. Greek-Valerian. Fl. April, May. Clt. 1758. Pl. 
3 oot. 
Cult. The species of Greek-Valerian are all handsome, 
hardy, border flowers, of easy culture. They grow in any com- 
mon garden soil; and are readily increased by dividing at the 
root, or by seed. 
II. DIAPENSIA. 
Fl. April, May. Clt. 1817. Pl. 
II. DIAPE'NSIA (the ancient Greek name for the Sanicle.) 
Lin. gen. no. 194. fl. lapp. 1. Juss. gen. 135. edit. Usteri, 
p.151. D. Don, in Sweet, fl. gard. n. s. t. 251. 
Lin. syst. — Pentándria, Monogynia. Calyx 5-parted, coria- 
ceous, tribracteate at the base. Corolla salver-shaped; tube 
short, wide; limb flat, 5-cleft. Stamens 5, inserted in the 
sinuses of the corolla nearly sessile: anthers linear, obtuse, in- 
serted by their bases, dehiscing lengthwise. Stigma obsoletely 
3-lobed. Cells of capsule many-seeded. Seeds roundish.— 
Small, tufted, North American herbs. Leaves alternate, 
crowded at the roots, coriaceous, quite entire. Peduncles scape- 
formed, 1-flowered. This genus is said to be nearly allied to 
Phlóx, but is easily distinguished from that genus, in the shorter 
corolla, in the concrete lobes of the stigma, in the many-seeded 
cells of the capsule, in the alternate leaves and inflorescence. 
1 D. LarrówicA (Lin. fl. lap. no. 88. t. 1. f. 1. spec. p. 202.) 
leaves linear-spatulate, coriaceous, glabrous, with callous, sub- 
revolute edges; peduncles usually 1-flowered, erect; anthers 
oblique, mutic. 2. F. Native of the mountains of Norway 
and Lapland, among stones covered with moss ; and New Hamp- 
shire, on the highest mountains, among moss; also of the Rocky 
mountains. Sweet, brit. fl. gard. n. s. t. 251. Wahl. fl. Japp. 
p. 98. t. 9. CEd. fl. dan. t. 47. Sims, bot. mag. t. 1108. D. ob- 
tusifdlia, Sal. par. lond. t. 104. Pursh, fl. amer. sept. 1. p. 
147. Corollas salver-shaped, with obtuse segments, pure white. 
Lapland Diapensia. Fl. Feb. March. Clt. 1801. Pl. 1 
inch. 
2 D. cuxxiróLiA (Sal. par. lond. t. 104. Pursh, fl. amer. 
sept. l. p. 148.) leaves lanceolate-cuneated, downy below; 
anthers horizontal, beaked atthe base. 2/. F. Native of North 
Carolina, on high mountains ; plentiful on pine barrens of New 
Jersey, near the sea coast. In the island called Grand Cayman, 
we have seen this plant, or a nearly allied species, growing 
near the sea, along with Jacquinea linearis, and Heliotropium 
gnaphaloides. D. Americana, Herb. Banks.  Pyxidanthéra 
barbulàta, Michx. fl. bor. amer. 1. p. 152. t. 17.  Calyxes 
ciliated? Flowers small, white. Leaves bearded inside at the 
base. Stems trailing. 
Wedge-leaved Diapensia. Fl. July. Clt, 1806. Pl. 1 to 2 
inches. 
