1906 



LONICERA 



LONICERA 



I. I'tiiltT side of Irs. 

 sfMiringlf/ pubes- 



cml :2S. minutiflora 



II. Vndcr side of Ivs. 



densely ttuhescent .-I). Morrowii 



VF. \yittter~itudji rather large, 



fhiiitted, xirith toug-exUaic 



settles: omry glandular. 



<!. Fls. uhitish, often slightly 



pinhi.'ih: Ifs. generally 



ovate to obovate, acute 



or abruptly aeuniinate, 



glabrous or sofl-pubes- 



rent 30. Xylosteum 



OG. Fts. pale yellow changing 

 to dee/HT yeltow: Irs. 

 rhombic-ovate to oi^te- 

 lanceolate, acuminate, 



pilose .'< 1 . chiysantba 



EE. Peduncles shorter than petioles. 

 F. Calyj- with 5 acute teeth: Ivs. 



acuminate 32. Maacldi 



FF. Calyr truncate, spliltino, 

 searious: tvs. obtuse or 



acutish 33. trichosantha 



BB. Habit climbing: branches hollow. 



c. Corolla less than I in. long, tube 



slightly rcntricosc; corolla dull red. 34. HeniTt 



cc. Corolla over 1 in. long, with slender 



tube. 



i>. Bracts leafy, ovale; corolla 1 \i-^ 



in. long, white or purplish: Ivs. 



more or less pubescent, hatf- 



ercrgrccn 35. japonica 



DD. Bracts subulate: Ivs. quite glor- 

 brous, evergreen. 

 E. Length of corolla S-4 in.: 

 color changing from white to 



yellow 36. longiflora 



EE. Length of corolla 6-7 in.: 

 color changing from yellow 



to orange-red 37. Hildebrandi- 



AA. FIs. in usually G-fld. whorls at the end |ana 



of the branehlets: Irs. below the infl. 

 connate (except in .Vo. 5.3). 

 B. Tube of corolla 3 or more timci longer 

 than limb; limb nearly equal or short 

 2-lipped. (See aluo iVo. 47.) 



c. Limb regular: Ivs. not ciliatc 38. sexnpeirirens 



cc. Limh short, 2-lipped. 



D. Lrs. ciliate 39. ciliosa 



DD. Lva. not or slightly eiliatc 40. Bto wiiii 



BB. Tube of corolla as long to twice (W lemg 



as limb; limb deeply 2-lipped. 



C. Corolla ]'2-l, rarely to l],^ in. long; 



tube of corolla rentricose, or 



slightly gifjbous, pubescent inside 



(except in No. 4f>). 



D. Bractlets at least half as long as 



ovary; corolla l^-34in. long, 



with ijil/hous tube 41. hispidula 



BD. Bractlets one-third as long or 

 shorter. 

 E. Disk of connate Ivs. elliptic, 

 pointed at both ends, wmally 

 concave. 

 F. Lvs. ciliate: branchleM pu- 

 bescent: corolla glandular 



outside 42. hirsuta 



FF. Lvs. not ciliate: branehlets 

 glabrous: corolla usually 

 glabrous outsiele. 

 G. Under side of lvs. pubes- 

 cent 43. glaucescens 



GO. Under side of lvs. glahrous.44. dioica 

 EE. IHsk suborlricular or oval, 

 rirurided at the ends, nearly 

 flat. 

 T. style and lube inside pubes- 

 eenl: disk usually with 

 dense whitish bUtoni above . 45. prolif era 

 FF. Style and tube insiile gla- 

 brous: disk bright green 

 above or only slightly 

 bloomy 40. flava 



CC. Corolla l]i-S in. long; tube of 



corolla slender, not v'entricnse, 



glabrous inside (except in Nos. 47 



ami lit). 



D. Whorh of fls., at lea-it the lower 



ones in the axils of connate lrs. 



E. 7'*//)^' of corolla S or 4 times as 



long as limb, stami tts much 



shorter llian limb 47. impleia 



EE. Tube of corolla not more than 



]}'-2 times o« long as limb; 



stamens about as long as 



limb. 



F. Braellits minute or wanting: 



whorls of fls. only 1 or 2.... 48. Caprifolium 

 FF. liraelhts about half as long 



as ovaries: whorls several. . 49. americana 

 DD. Whorls of Jls. in peduncled heads 

 or spikes. 

 E. Lvs. below the infl. connate. 

 F. Fls. in elongated spikes with 



remote whorls SO. Heckrottii 



FF. Fls. in dense heads. 



G. Corolla about .3 in. long: 

 head short - peduncled 



with I or 2 whorls 51. tragophylla 



GG. Corolla 1\2'2 in. long: 

 heads long-peduncled, 

 often in S's, with several 



whorls 62. etrusca 



EE. Lvs. all distinct: fls. in a dense 



head 63. Pericly- 



[menum 



Subgenus CHAM^CERASUS. 



Section Isoxylosteum. 



1, syringSntha, Maxim. Upright slender-branched 

 tihrub, glubrous: Ivs. olhptic to oblong, obtuse or acutish, 

 dull bluish green, }2-l i"- long: peduncle Jjin. long; 

 oupulc shorter than ovaries; calyx-teeth lanceolate; 

 corolla tubular-funnclform, J^in. long, pale rosy lilac, 

 fragrant; stamens and style included: fr. red. May, 

 June: fr. in Aug. W.China. B.M. 7989. R.H. 1907, p. 

 281. Var. Wolfii, Rehd. Branches more spreading, 

 often procumbent: lvs. narrower, usually acute: fls. 

 lilac-carmine. W. China. — Very graceful shrub pro- 

 ducing its fragrant 

 fls. profusely. 



2. thibetica,Bureau 

 & Franch. (L. rupl- 

 cola var. Ihibetica, 

 Zabel). Fig. 2195. 

 Shrub, to 5 ft., with 

 wide-spreading slen- 

 der, often procum- 

 bent branches: lvs. 

 oblong- lanceolate, 

 acute, rarely obtua- 

 ish, dark green and 

 glo.ssy above, white- 

 tomentose beneath, 

 H-1J4 in- long: pe- 

 duncle to }/^in. long, 

 cupiile about half as 

 long as ovaries; co- 

 rolla tubular-funnel- 

 form, pale purjjle, 

 about 3^211. long, 

 slightly tomentose 

 outside, fragrant; 

 stamens and style in- 

 cluded : fr. red. May, 

 June; fr. in Aug., 

 Sept. W. China. S. 

 T. S. 1:45. R.H. 

 1902, p. 449. — A 

 den.se much-branched 

 2196. Fly honeysuckle.— Lonicera sl'^'h well suited for 



canadensis. (XH) No. 4. rocky slopes. 



