POLEMONIACEJE. I. POLEMOMCM. II. DIAPEXSIA. 



239 



FL May, June. Clt. 1827. 



Prettieit Greek-Valerian. Fl. July, Aug. Clt, 1827. PL | 

 foot. 



7 P. RICHARDSONII (Graham, in edinb. phil. joum. dec. 1827. 

 bot. mag. 2SOO.) 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- 

 rica, in deep sandy soil, about the Great Bear Lake, Richard- 

 son ; and of Siberia. P. speciosum, Fisch. mss. P. coeruleum, 

 var. nana, Hook, in Lin. trans. 14. p. 377. 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. speciosum, Fisch. mss. from the islands 

 of St. Lawrence and St. Paul; and P. lanatum, Fisch. mss. from 

 Kamtschatka, is a variety of the same, with more downy stems. 



Richardson's Greek- Valerian. Fl. July, Oct. Clt. 1826. 

 PI. 1 foot. 



8 P. MOSCHA'TCM (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. 11 . 

 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- 

 tonii. 



fy-scented Greek- Valerian. 

 PL 3 to 4 inches. 



9 P. VILLOSUM (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. 11 . H. Native of 

 Siberia, Kamtschatka, &c. P. lanatum, Fisch. mss. P. humile, 

 Roem. et Schultes, syst. 4. p. 792. Lindl. bot. reg. 1304. Pol. 

 coeruleum, p, 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. Richardtoiui. 



nilaus Greek- Valerian. Fl. July, Oct. Clt. 1826. PL i 

 foot. 



10 P. MEiicA'suM (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 3-lobed, terminal 

 leaflet ; flowers drooping ; calyx 

 clothed with clammy villi. If. .H. 

 Native of Mexico. P. ciliatum, 

 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 



FIG. 26. 



on the banks of the Canadian river; but the flowers in his 

 plant are said to be smaller. 



Mexican Greek Valerian. Fl. April, May. Clt. 1817. PL 

 1 foot. 



IIP.? CILIA'TCH (Willd. mss. ex Roem. et Schultes, syst. 4. 

 p. 792.) leaves pinnatifid, hairy, ciliated; segments of corolla 

 ciliately toothed. % . H. Native of Pennsylvania, Mnhlen- 

 burgh. Leaves sessile, with acute segments. Flowers terminal, 

 racemose. Calycine segments linear, ciliated, acute, length of 

 corolla. Perhaps a species of Eutoca. 



Ct/wrted-leaved Greek- Valerian. PL 



12 P. KE'PTANS (Lin. spec. 230.) root creeping ; stems leafy, 

 glabrous ; leaves pinnate ; leaflets 7, ovate, acute, glabrous j 

 flowers nutant ; segments of corolla cuneate. 7/ . 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. 



Creeping Greek- Valerian. Fl. April, May. Clt. 1 758. PL 

 I foot. 



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. DIAPE'NSIA (the ancient Greek name for the Sanicle.) 

 Lin. gen. no. 194. fl. lapp. 1. Juss. gen. 13.5. edit. Usteri, 

 p. 151. D. Don, in Sweet, fl. gard. n. s. t. 251. 



Lix. SYST. Pentdndrla, Monogynia. Calyx 5-parted, coria- 

 ceous, tribracteate at die 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 

 Phlox, 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. LAPFOJJICA (Lin. fl. lap. no. 88. t. 1. f. 1. spec. p. 202.) 

 leaves linear-spatulate, coriaceous, glabrous, with callous, sub- 

 re volute edges; peduncles usually 1 -flowered, erect; anthers 

 oblique, mutic. lj . 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. lapp. 

 p. 58. t. 9. (Ed. fl. dan. t. 47. Sims, bot. mag. t. 1108. D. ob- 

 tusifolia, Sal. par. lond. t. 104. Pursh, fl. amer. sept. l.p. 

 147. Corollas salver-shaped, with obtuse segments, pure white. 



Lapland Diapensia. Fl. Feb. March. Clt. 1801. PL 1 

 inch. 



2 D. crxEiFouA (Sal. par. lond. t. 104. Pursh, fl. amer. 

 sept. 1. p. 148.) leaves lanceolate-cuneated, downy below; 

 anthers horizontal, beaked at the base. ~il . 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 Helwtropium 

 gnaphalotdes. D. Americana, Herb. Banks. Pyxidanthera 

 barbulata, Michx. fl. bor. amer. 1. p. 152. t. 17. Calyxes 

 ciliated ? Flowers small, white. Leaves bearded inside at the 

 base. Stems trailing. 



Wedge-kated Diapensia. Fl. July. Clt. 1806. PL 1 to 2 

 inches. 



