PEIMEOSE FAMILY 647 



Sca^Kise animals ; capsule many'-seeded.. 4. Aicdbobace. 



CHarwIla rotate, its lobes convolute or involute in bud ; stamens exserted ; plants 

 leafy-sTiem med. 

 Capsule opening length'srise ; erect plants. 



Flowers mostly 7-merauB; corolla white; proper leaves clustered near 



tlie top of the stem, the lower ones reduced. 5. Tbxentalib. 



Flowers mostly .5-merouE; leaves scattered on the stem, opposite or 

 vertieillate. 

 Staminodia wanting; filaments xmited at the base; flowers solitary 



or racem:Ose. 6. Ltsimachia. 



Staminodia present ; filaments distinct. 



Flowers Bohtarj-; staminodia conspieuous; corolla-lobes broad. 



7. Steikonema. 

 Flowers in short axillary spikes; staminodia tooth-like: corolla- 

 lobes long and linear. 8. ZSTAUMBrKGiA. 

 Capsule circumBcissile; low depressed herbs. 



Corolla longer than the calyx; filaments pubescent, adnate to th.e base 



of the corolla. 9. Asagauuls. 



OfflTolla shorter than tlie calyx; filaments glabrotis, adnate to the coroUa- 

 tube. 10. Ce?,"to<cx'L.x;s. 



CardBariEibes reOexed; stamens moire or less naonadelphous ; plants scapose. 



12. DODECATHBON. 



OoToSla wanting; calyx with 5 pefcaloid lobes; flowers solitary, sessile, axiUarv. 



11. Glavx. 

 Ovary partly inferior, tlie lower portion included in and adnate to the hypanthium; 

 plant leafy-stemmed. 13. Samolus. 



1. PEIZ1<IU'LA L. Pkimrobe, Cowslip. 



Perennial Beapose herbs. Leaves all in a basal rosette. Flowers in ours 

 lambelli." -'^hs. tubular, campanulate or funnelform, persistent, usuall}- 



angled- '■-. -: :, the lobes imbricate. Corolla salver-shaped or trumpet-shaped, 

 with a funnelform throat, the tube longer than or equalling the cah"x. Stamens 

 5, dastiiaet, imserted in the tube or the throat of the corolla. Style filiform; 

 sitJigDna, ca^ifcaate. Capsule 1-celled, o-Talved at the apex, manj^-seeded. 



BraebB off Kiiie imixdiucres more or less gibbous at the base; lobes of the coroUa deeply 3- 

 ^fleft. 



Plant TisuaDy .a 1 dm. high, rarely mealy. 



Cadys ab. _. . :. .-i^aJf as long as the corolla-tube; lobes oblong, obtuse; leaves thin. 



1. P. m.istassinica. 

 Caly:x at least two-thirds as long as the corolla-tube; lobes acutish; leaves rather 

 thidi- 2. P. MacCalliana. 



Plant taDer, 1-4 dm. high, ustiaUy more or less mealy; leaves oblong or oblong-spatu- 

 lat«. 

 Bracts lanceolate, thick, obtusish. 3. P. incana. 



Bracts linear-subulate, thin. 4. P. specuicola. 



Rracts of the involucres not gibbous below; lob^ of the coroLLa merely emarginate or 

 notched, or entire. 

 Plant less than 1 dm. high, 1— few-flowered : flowers less than 2 cm. long. 



Scape usually l-flowered, rarely 2-flowered ; bracts subulate, small, less than 5 mm 

 long. 5. P. angustifolia. 



Scapes 2— 4-flowered; bracts conspicuous, oblong, more than 5 mm. long. 



6. P. Broadheadae. 

 Plaint 1.5—5 dm. high, many-flowered; flowers more than 2 cm. long. 



7. P. Parry i. 



1. P. mLstassinica Michx. Leaf-blades spatulate or obovate, denticulate 

 or r^sand. 1-3 cm. long, obtuse or rounded at the apex; scape 1-1.5 dm. high, 

 slender " ■ , -- subulate; eal^'x-lobes nearly as long as the tube; corolla pink or 

 pale p"__- , .V . r.>es of the limb usuaUj- 4-5 mm, long, obcordate. Wet banks : 



- : :.- — ^Xev, — Minn. — ^Alta. Boreal. My-Jl. 



2. P. MacCalli&na Wiegand. Leaf-blades broadly spatulate or oboTate- 

 cun^.:.:- : :.:heT thi':'k. ]-2.5 cm. long, obtuse or rounded and crenate at the apex; 

 scape 5-12 :. . • racts subulate, 5 mm long; coroUa deep rich blT}e, with a 

 laiige orange t.-.. .^..-es 5-^ mm. long, broadlj' obeordate. Wet places in the 

 Bodkies: Alta.— B.C. Mont. Je. 



3. P. incana M. E, Jones, Leaf-blades oblong or oblong-oblaneeolate or 



' ' -.'-e. 2-S cm. long, obtuse at the ape:s;, sinuate-dentate or subentire, more 



luealy beneath; scape 1-3 dm. high; bracts 6-10 mm. long; calj-x 6-8 mm. 



. - •">" equalling the eorollar-tube, more or less mealy; lobes oblong, obtuse 



- -" - _:_-.. ooroUa hlac, S-9 mm. long; lobes obcordate, 2-3 mm, long, P. amer- 



