THALICTRUM 



cc. Fruits longitudinally 

 veined: stigma terminal^ 

 minute, not dilated, style 

 short 



Fls. pohftjamO'diceeious. 

 B. Anthers linear, mneronnte: 



fihniieiits thniKl-like 



3B. Alith. rs nniU': ..hlns,. Ida- 



Fls. diueioL. ,rUh rarr exrrp- 



THALICTEUM 



1791 



purpurascens 

 polygamum 



B. Filitments widened above: 



anthers ovate, rather obtuse. 7. aquilegiSolium 

 BB. Filaments thread-like: an- 

 thers linear, aeute or mu- 



c. Mature fruits rather firm 

 or thick -walled , not 

 greatly flattened, filled by 

 the seed. 

 D. Sepals iir.rii in-<i,<' iihli. 

 E. Blad.s nl l,,ifl,l.-< ,;,■!/ 



thill 8. dioicum 



r. iini h, laic 9. venulosum 



III., s, /hils ji Ill-Ill,' 10. Delavayi 



cc. Ml, I hi: Ii-iiiIs /.,s.s- lifiii. 

 III! II - irall.il, J -r.hii'd . 

 eilhrr Ihitl. neil ,ir tiinlid . 



D. Leaflets nrij thin 11. occidentale 



DD. Leaflets firm. 



E. Pistils 5-11 { ru re ly IS ) : 



akenes flattened 12. Fendleri 



EE. Pistils 7-m: akenes 



turgid 13. polycarpum 



1. petaloideum, Linn. Stem round, nearly 1 ft. high, 

 almost naked: Ivs. 3-5-parted; Ifts. smooth, ovate, en- 

 tire or 3-lobe(l: Hs. corymbose, perfect; sepals white, 

 rotund; filaments pink; anthers yellow: fr. ovate-ob- 

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

 9:891. — Not yet in American trade lists but well worth 

 cultivating. 



2. Bparsiflflrum, Turcz. Stem erect, sulcate, 2-4 ft. 

 hifih, brancliinfj, usually glabrous: Ivs. triternate, up- 

 per ones sessile; Ifts, short-stalked, round or ovate, 

 variable in size and shape of base, round-lobed or 

 tootlied: fis. in leafy panicles on slender pedicels, per- 

 fect; sepals obovate, whitish, soon reflexed; filaments 

 somewhat wi<lened; anthers very short: akenes short- 

 stalked, obliquely obovate, flattened, dorsal margin 

 straight, 8-10-nerved; styles persistent. N. Asia, 

 through Alaska to Hudson Bay, in mountains to Colo- 

 rado and southern California. 



3. minus, Linn. (T.pnrpiireum, Sehang. T. saxdtile, 

 Vill.). Stems round, sulcate, 1-2 ft. high: Ifts. variable, 

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

 in loose panicles, perfect; sepals yellow or greenish: 

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

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

 the leaflets. 



Var. adiantifdlium, Hort. (T. adiantoides, Hort. T. 



of Adi- 



Stems 

 ■orbicu- 

 ri erect 



adiinilhifliliiuii. Bess.). Lfts. resembling tho 

 autum fern. — A form much used and admired 



4. glatlcum, Desf. {T. specidsmn, Hort.] 

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

 lar. 3-lobed; lobes deeply toothed: fls. in 

 panicle, perfect; sepals and stamens yellow: fruits 4-6, 

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



.5. purpurAscens, Linn. (T. pnrpiireum. Hort.). A 

 polymorphous species, allied to T. pnhjgamum: stem 

 3-6 ft. high, branching above, leafy, pubescent or 

 glabrous, sometimes glandular: lfts. larger than in that 

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

 cious; filaments narrow; anthers rather long, taper- 

 pointed: akenes slightly stalked, ovoid, glabrous or 

 pubescent, with 6-8 longitudinal wings; style slender, 

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

 west to the Rockies. June-Aug. 



6. polygamum, Muhl. Tall Meadow Rue. Erect, 

 3-8 or more ft. high, branching and leafy, smooth or 



pubescent, not glandular: Ivs. three to four times ter- 

 nate or terminally pinnate; lfts. oblong to orbicular, 

 bases variable, 3-5 apical lobes: fls. in a long, leafy 

 panicle, polygamo-dioecious ; sepals white; filaments 

 broadened when young; anthers short: akenes ovoid, 

 stipitate, 6-8-winged or ribbed, with .stigmas as long, 

 which become curled. July, Aug. Low or wet grounds, 

 Canada to Fla , westward to Ohio 



7 aquilegifolium, Lmn. Feathered Columbine. 

 Fu' 24M sums Urge, hollow, 1-3 ft high, glaucous: 

 hs nil itwii -iparteil, lfts stalked or the lateral 

 om s I 11 1\ s il -luhtlj lobed or olituselj toothed, 

 snio th 1 ill 111 II lis in a lorMnbose panicle, 

 due. I u- - 1 lis «liit. stamens I urile or white fr. 

 3 angled winged at the angks M \ luh Fu , N. 

 Asia BM 1818, 2025 (as v ir r i i in 47, p. 

 357, 50, p 117 -The old name/ ( ' 1 ii i nnybea 

 synonvm of this, and if so It IS till I I i i n I iii.;pub- 

 lished on a preceding page, but J < w I s, ribed 

 as an American plant, while T a i i i i t As 

 the description and old flgun I / ( /do not 

 agree with any American plant tl i n i \ well be 

 dropped Those phnts uheitis. 1 is / ( niuti are 

 probably T uq i I i I i i T pulyyamum 



8 didicum Li i 1 I i 1 nder, 1-2 ft high, gla- 

 brous h s tl 1 II I nils 3 parted, lfts thm, 

 oibicular, seM i I I i liiti bisis \ ariable : 

 fls in a loost I I 1 < Is, di- 

 oecious, stamen i i I epals; 

 anthers line ir I i ts in 

 length akenes c \ i 1 i i longer 

 than their stjles, wilh u> in io ii ii^itudiii U grooves. 

 Earh spring Woods, Labiador to Ala , west to the 

 foot of the Rockies, 



se Allied to T dioieum stem 

 high, glabrous, glaucous, bear- 

 rs above the base Ivs three to 

 lfts short stalked rather firm, 

 he ipe\ veiny beneath fls m a 



9 veimldsum, Trele 

 simple, erect, 10-20 ii 

 ing 2-i long petiokd 

 four times 3 p irted, 

 rounded and l.ihed it 

 simple pauH li 1 i i 

 10-20, on si. 1 1 

 pointed ak. 

 tapering to i 

 S Dak westw i I i 



^ ovoid 

 edged. 



2493. Thalictrum aauileeifolium (X M). 



1, gla 



Delavayi, Franchet. Slender, 2-3 ft. hig 

 5: lower Ivs. on long, slender petioles, two to three 

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

 ate, roundetl or cordate: fls. pendulous, dioecious; 

 sepals purple or lilac, K in. long, equaling the slender 

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



