thalictru:m 



THALICTRUM 



1791 



00. Frn ils J n <i i t h d i nail if 

 n I tii'd : .st i<!iH<i (<• fin i ill! / , 

 „iiHnf.:\ >ini Jihi/ii!. .s7///< 



,s7(.'»-/ 4. glaucum 



AA. F!s. p<'hf,j.n,i<>-iJiiivious. 



B. Ai'/Jn r.s Vni'.ir. iti kc rcltii ti : 



I'iliDnt iifs tJi n-iul-l' L\- ."). purpurascens 



EB. Aiiflnrs ovate: ohliisr, (ihi- 



iHvats hraaj.iinl ahare {>. polygamum 



A\A. Fls. d/<irlatis. intli rar< e.rr< p- 



tii'US. 



B. Fihini, »ts iriiJcih'iJ <t ha rr : 



ididicrs ocafi'. railir r al-t ns, . 7. aqiiileg-iioliuni 

 BB. Fitann »ts th n ad - / i kr : an- 

 fln rs It tiea r. ai-(ih: "f tii ii - 

 erotiafr. 

 0. Ma(i<i\ fruits rather firia 

 or thirl- - n-a J Ir d . aot 

 iir<-itlii flattcard, fl/lrd In/ 

 Oh- serd. 

 D. iScpaJs qri rii or i/rt'. )i is]/ . 

 E. Bl<td''S of trafl.ts r< rif 



thin S. dioicum 



EE. liliKh's of Irafli ts firm . 



t\ iiiji hi lair 'J. venulosiim 



I'D. Sepals purple 10. Delavayi 



OC. Mature fruits hss firm, 

 thin - walled. J -e deied . 

 eitli. r flatleiitd ar tunjid. 



D. Ltuflefs very thin 11. occidentale 



DD. Leaflets fir)n . 



E. Pistils 5-11 ( ra rel n Id ) : 



akenes flaffeiud 12. Fendleri 



EE. Pistils 7-JO: akenes 



tuni'd i;!. polycarpMiu 



1. petaloideum. Linn, Stem romul. nearly 1 ft. lii,i::li. 

 almost iiaktd: Ivs. :;-.'i-partf d ; lft.s. ^moutb, uv;tt<.-. en- 

 tire oro-lobfd: ri^. rorymbose, perfect; sepals white, 

 rotund; filanifiits [link; anthers yeUow: fr. ovate-oh- 

 lonff. striated, sessile. June, July. N. Asia. L.B.C. 

 l':s;il. — Xot yet in Ani'-rican tradf li-^ts Imt well \vi>rth 

 cultivating. 



2. sparsiflorum, Tnrez. Stem erect, snlcate. '2-4 ft. 

 high, brancdiiug. usually glaiirou--; lv>. triternatr. up- 

 per ones sessile; Ifts. shurt-stalked, round or ovate. 

 variable in size and shape of base, rounddobed or 

 toothed: fls. in leafy panicles on slender pedicels, per- 

 fect; sepals obovate, whitish, soon reflexed ; filaments 

 somewhat widened; anthers very sluTt; akenes short- 

 stalked, obliquely obovate, flattened, dorsal margin 

 straight. S-10-nerved; styles persistent. N. Asia, 

 through Alaska to Hudson Bay, in mountains to Colo- 

 rado and southern California. 



o. minus, Linn. { T. purpfireuin . 8'diang. T. soxi'itile. 

 VilL). 8tems ruund. sulcate, l-2ft.high: Ifts. variable, 

 acute or obtusely lobed. often glaucous: tls. drooping, 

 in loose panicles, perfect; sepals yellow or greenish: 

 fr. ovate-oblong, sessile, striated. Summer. Eu.. Asia. 

 X. Afr.— A polymorphous species in the variation of 

 the leaflets. 



Var. adiantifdlium, Hort. {T. adianfoides. Hort. T. 

 adia))thif''diuiu, Bess. I. Lfts. reseudding those of Adi- 

 antum fern. — A form much used and admired. 



4. glaiicnm, Desf. {T. S2?ec>ds7i»>, Hort.1. Stem? 

 erect, round, glaucous, 2-5 ft. high: lfts. ovate-orliicu- 

 ]ar, 3-lobed; lobes deeply toothed: fls. in an erect 

 panicle, perfect; sepals and stamens yellow: fruits 4-0, 

 ovate, striated, sessile. June, July. S. Eu. 



5. purpuriscens, Linn. {T. p^trpureno)!. Hort.). A 

 polymorphous species, allied to T. pnl ipja )>iutn: stem 

 3-(3 ft. high, branching above, leafy, puliescent or 

 glabrous, sometimes glandnlar: lfts. largerthan in that 

 type: fls. in a long, loose, leafy panicle, potygamo-dice- 

 cious; filaments narrow; anthers rather long, taper- 

 pointed: akenes slightly stalked, ovoid, glabrous or 

 pubescent, with 6-8 longitudinal wings; style slen<ler, 

 persistent; stigma lontr and narrow. Canada to Fla,. 

 west to the Rockies. June-Aug. 



ti. pol:^gainum, Muhl. Tall Meadow Rce. Erect, 

 3-S or more ft. high, branching and leafy, snmotli or 



l)ubes<'ent. not glandular: Ivs. tbror to tour times ter- 

 nate or terminally (dunato; lfts. oblong to orhiculur, 

 bases variaide, 3-o apical lol.ies : ils. iii a. Ion;:, loafy 

 panicle, polygamo-diiecious ; sejtals white; lilamenis 

 l)roadrned when young; anthers short: akene.s ovoid, 

 stipitate, (.i-S-\\iuL;i'd <ir rllibod, wiili sti,Lj;nias as Ion;;, 

 whirh hrcniH- eiirlrd. July, Aug. Low or wet grounds. 

 O'anada In Lla., we.slward to (_*hio. 



7. aquilegifolium, Linn. Featheked Colombike. 

 Fii:. 2i:i:;. stems large, hollow, l-ii ft. high, glaucous: 

 lv>. once or twice 8-5-parted; lfts. stalked "or the lateral 

 ouL-.s nearly sessile, slightly lobed or obtusely toothed, 

 sniixith. sul 'orbicular : Hs. in a corymbose ]ianicle, 

 diierii.ii-;; se])als wdiitr; stamens imrjile eir white: fr. 

 :;-anglcd. winge.l at the angles. Mav-JtUy. Eu., N. 

 Asia. H.M. ISlfS; 2t)2,"> (as var. f<'rtnasuni ) . Cn. 47, p. 

 :5r.7; ."!), p. 11 7. -The old name T.Comiiti. Linn., may be a 

 synonyiuof this. ami if so it is the older name, being pnl»- 

 lished on a preceding page, but T. Cam lit I was d escribed 

 as an American i>lant, while 7'. aijuileiiif(di ntn is not. As 

 the -leseription and old ti;,:ure of T. ('iutinli do uot 

 agree with any Ameidi-an plant, tlie nami- ma}' \A'ell be 

 dro]i])ed. Those plants ailvertised as 7'. Cornuli an- 

 pr<jl)ably T. aquiteijifoliiDii or T.poIij(jam.a.)ii. 



8. dibicum, Linn. Rather slender, 1-2 ft. high, gla- 

 brous: Ivs. three to tour' liujes .'i-parted; lfts. thin, 

 orbicular. several-Ioiied or revolute, bases variable : 

 rts. in a loose, leafy panieh- witli slender pedicels, di- 

 u-cious; stamens much longertbau tbe greenish sepals ; 

 anthers linear, obtuse, exceed in;: their filaments in 

 length : akenes ovoid, nearly or (piite sessile, longer 

 than their styles, with about 10 boi^^ittidinal grooves. 

 Early spring. Woods, Labrador to Ala., west to the 

 foot of the Rockies. 



9. venulbsum, Trelease. Allied to T. dl"icu)n: stem 

 simple, erect, 10-20 in. high, ghdjrous, glaucous, bear- 

 ing 2-3 long-petioled Ivs. above the liase : Ivs. three to 

 fotir times 3-parted ; lfts. short-stalked, rather firm, 

 rounded and lobed at tlie api-x, veiny beneath: fis. in a 

 simple ]>anicle, dioM-jous, small; se]ials ovate; stamens 

 Ui-20. on slender filaments ; anthers oblong, slender- 

 pointed : akenes nearly sessile, 2 lines long, ovoid 

 tapering to a. straiglit beak, thick-walled and 2-edged. 

 S. Dak. west\vard and soutliwar(J in the mountains. 



2493. Thahctrum aquilegifohum (\ \) . 



H\ Delavayi, Franchet. Slender, 2-3 ft. high, gla.- 

 brous : hiwer Ivs. on long, slender petioles, two to three 

 times 3-ri-parted ; lfts. long-stalked, 3-5-lobed. base 

 cuneate. rounded or cordate: fls. pendulous, dio'cious: 

 sejials jnirple or lilac, ^-i in. long, equaling the slender 

 stamens, anthers linear: carpels 10-12: fr. winged at 



n.1 



