14S 



POTERIUM— PKINOS. 



rhombic, simply and doubly serrate ; flow- 

 ers numerous, sub-corymbed, and axillary ; 

 petals obcordate, shorter than the calyx. 

 8-10 i. Old fields. Can. to Car. 



villo'sa, (hairj' five-finger, 2i.) assurgent, 

 silky-villose ; stipules broad, membrana- 

 ceoas, entire ; leafets sessile, approximate, 

 with shining-, close-pressed hairs above, 

 hoary-tomentose beneath ; peduncles short, 

 aggregate ; petals obcordate, longer than 

 the calyx. 



hirm'ta, (w. Ju. 2|.) erect, simple, very 

 hirsute ; leafets roundish, deeply dentate ; 

 stipules lanceolate, sub-entire ; flowers ax- 

 illary, sub-corymbed ; petals oblong-linear, 

 shorter than the calyx. 

 POTE'RIUM. 19—12. {Rosacea.) [From 



poterion, a cup, so called from the shape of 



the flowers.] 



sangniso/'ba, (burnet, J. 21-) stem some- 

 what angled, unarmed ; leaves pinnate ; 

 leafets serrate ; flowers in heads. Ex. 

 PREN.\N"TIIES. 17—1. (Cichoracea.) [From 



pre.nes, drooping, and anthos, flower.] 



ar'ba, (white lettuce, w. p. Au. 2i-) rad- 

 ical leaves angled, hastate, toothed, some- 

 what lobed, cauline ones round-ovate, 

 toothed, petioled, upper ones mostly lance- 

 olate ; panicle lax; the terminal fascicle 

 nodding ; calyx 8-cleft, 8-10 flowered. Var. 

 nana, leaves 3-parted, hastate, ovate, and 

 lanceolate, sometimes all simple ; racemes 

 panicled or simple. 1-3 f. 



aUis"sima, (p. y. Au. Ill) stem branch- 

 ing ; leaves petioled, 3-lobed, angled, den- 

 ticulate ; margin scabrous ; racemes axil- 

 lary ; flowers nodding ; calyx about 5-flow- 

 ered. 



corda'ta, (w. y. Au. 1(.) .stem panicled 

 above ; leaves petioled, cordate, toothed, 

 ciliate ; floral ones sessile, obiong, entire ; 

 panicle lax ; raceme flowered. 4-6 f. 



virga'ta, (w-p. Au. 2^.) glabrous; stem 

 very simple ; leaves all lyrate-sinuate ; 

 branches somewhat 1-sided ; flowers pen- 

 dent ; involucre glabrous, 8-cleft, 10-fiow- 

 ered. 3-6 f. 



crepidi7i"ea, (S.) leaves broad-lanceolate, 

 attenuated at the base, unequally tooth-an- 

 gled ; panicle fascicled, terminal, few-flow- 

 ered, nodding ; involucrum hirsute, 10-12 

 cleft, about 20-flowered. 4-6 f. 



deltoi'dea, (p. S.) stem simple, glabrous ; 

 leaves deltoid, acuminate, acutely denticu- 

 late, sub-glaucous beneath ; racemes axil- 

 lary, few-flowered; hivolucrum 5-flowered. 

 2f. 



•paucijlo' ra, stem branching, flexuous, 

 panicled above ; branchlets 1-flowered ; 

 flowers erect ; leaves lance-linear, runci- 

 nate, glabrous ; involucrum about 5fiow- 

 ered. 



iUinoicn"sis, stem simple, and with the 

 leaves, very rough ; leaves all undivided, 

 lance-oval ; raceme long ; fascicles sub-ses- 

 sile, erect, hirsute. S. 

 PRIMU'LA. 5—1. (PrimulacecB.) tFrompri- 



mulus, the beginning, so called because it 



blossoms in the beginning of spring. The 



natural family, Primulaccae, is a division of 



Jussieu's order, Ly.simachiae.J 



fariiio'sa, (bird's eye primrose, p. ZX.) 



leaves obovate-spatulate, mealy beneath, 

 umbel many-flowered ; peduncles spread- 

 ing ; border of the corolla flat, as long as 

 the tube, with obtuse, obcordate segments , 

 scape 6-10 i.^ Leaves all radical. 



7nistasin"ica, {21.) small, glabrous ; leaves 

 oval-spatulate, sub-dentate; scape elonga- 

 ted ; umbel few-flowered ; limb of the cor- 

 olla reflexed ; segments wedge-oblong, ob- 

 tusely 2-cleft ; capsule oblong, ex.sert. 



angustifo'lia, (p.) leaves lance-oval, very 

 entire, glabrous ; scape 1-flowered ; seg 

 ments of the corolla ovate, very enth-e 

 1-2 i. 



cortusoi'des, a very ornamental species, 

 producing red flowers from May to July. 

 Ex. 



prceni'tens, (Chinese primrose,) a beauti- 

 ful species, of which there are many vari- 

 eties with pink, with white, and with semi- 

 double flowers. Ex. 



acau'lis, (primrose, 2_f.) leaves rugose, 

 toothed, hirsute beneath ; scape 1-flowered. 

 Ex. 



aurid'ula, (auricula primrose, 2^.) leaves 

 serrate, fleshy, obovate : scape many-flow- 

 ered ; calyx mealy. Ex. 



ve'ris, (cowslip, r-y. 2^.) leaves rugose 

 toothed ; limb of the corolla concave ; neck 

 of the tube oblong; calyx inflated. 



ela'tior, (oxlip primrose, w. y. 2|.) stalk 

 many-flowered ; limb of the corolla flat ; 

 flowers in an umbel, pale yellow, the cen- 

 tre deeper yellow ; this is supposed to be a 

 hybrid, between tlie primrose and cow- 

 slip. 



vulga'ris, the English botanists describe 

 the acaulis under this name ; it is the poly 

 anthus of the florist. 



PRI'NOS. 6—1. (Rhamni.) 



verticilla'his, (winter berry, w. J. Tp.) 

 stem much branched ; leaves deciduous, 

 oval, serrate, acuminate, pubescent be- 

 neath; flowers dioecious, 6-cleft; sterile 

 ones axillary, sub umbellate ; fertile onea 

 aggregated, berries globose. Berries bright 

 scarlet. 6-8 f. Swamps. 



gla'ber, leaves evergreen, w^edge-form, 

 coriaceous, shining ; pedicels axillary, most- 

 ly 3-flowered ; berries black and shining, 

 globose. 3-4 f. Ink-beny. 



Iceviga'tus, (Ju. ^.) leaves deciduous, 

 lanceolate with appressed serratures, glab- 

 rous both sides, shining above ; nerves be- 

 neath scarcely pubescent; flowers 6-cleft; 

 pistillate flowers axillary, solitary, sub-ses- 

 sile ; staminate flowers scattered. 6-8 f. 



ambig"uus, (w. J. ^.) leaves deciduous, 

 oval, entire, acuminate at each end; flow- 

 ers 4-cleft; staminate ones crowded on the 

 lower branches, pistillate ones solitary, on 

 long peduncles. A small tree with whitish 

 bark. 3-5 f. 



integrifo'lia, ( ^ .) leaves deciduous, oval, 

 entire, mucronate, on long petioles, giabroua 

 on both sides ; pistillate flowers solitary, 

 long-peduncled. S. 



lunccola'tm, (J. '^ ■) leaves deciduous 

 lanceolate, finely and remotely serrulate, 

 acute at each end, glabrous on both sides ; 

 pistillate flowers scattered generally m 



