Book  (Oct 2001)  Page(s) 102-103.  Includes photo(s).
 
Clematis aethusifolia
Origin: Northern China and Manchuria
Species ca. 1875
... long, bell-shaped, creamy yellow, scented flowers... four tepals...

Book  (1912)  Page(s) 83.  
 
Clematis L. — N. Pff. iii. 2. 62. — Ranunculaceæ-Clematideæ.
æthusiæfolia Turcz. — Kuntze, Mon. 129; B. M. t. 6542. — Mongolia. ♃ §.

Book  (1906)  Page(s) 54.  
 
Clematis Æthusifolia.  Mongolia.  1861.  From 4 to 6 feet.  A dwarf, sub-shrubby plant.  Flowers campanulate, yellowish-white.  August and September.  Syn. C. nutans, var. Æthusifolia.
A pretty species with small, doubly-pinnate leaves; the var. Latisecta (North China, 1869) differs from the type in having larger leaf segments and in the leaf edges being irregularly toothed; both are quite hardy.  (Graveolens type.)

Magazine  (1882)  Page(s) 34, 372.  
 
p. 34: Du nord de la Chine et du pays d’Amur nous vient le Clematis aethusifolia latisecta, grâcieuse plante grimpante à feuilles composées-pennées, couverte d'une profusion de fleurs pendantes blanc crêmeux, cylindro-campanulées. 

p. 372: Clematis aethusaefolia, Turcz., var. latisecta, Bot. Mag., pl. 6542. — PI. grimpante, à tiges et branches anguleuses et canaliculées; feuilles très nombreuses, bi-tripennées, à segments larges ou étroits, arrondis et dentés; fleurs
blanches, campanulées. De la Chine septentrionale.

Magazine  (1 Feb 1881)  Page(s) tab 6542.  Includes photo(s).
 
Clematis aethusaefolia, var. latisecta.
Native of Amur-land and N. China.
Nat. Ord. Ranunculaceae.— Tribe Clematidae.
Genus Clematis, Linn. ; (Benth. et Hook. f. Gen. Pl. vol. i. p. 3.)

CLEMATIS (Flammula) aethusaefolia ; scandens, glaberrima v. puberula, caulibus gracilibus angulatis sulcatisque, foliis parvis 2-3-pinnatisectis,segmentis cuneatis incisis v. pinnatilobatis obtusis angusto linearibus v. oblongis v. obovatis, pedunculis solitariis binis ternisve elongatis gracilibus erectis apice decurvis, floribus inter minoribus 1/2-3/4 poll, longis cylindraceo-campanulatis, sepalis 4 oblongis cohaerentibus albis dorso pubescentibus apicibus latis liberis paullo recurvis obtusis v. subacutis, filamentis dilatatis.
C. aethusaefolia, Turcz. Decad. PI. Chin. p. 2 ; Walp. Rep. vol. i. p. 5.
Var. latisecta, foliorum segmentis latis.
Maxim. Prim. Fl. Amur. p. 12 ; Regel Flor. Ussur. n. 4 ; Gartenfl. 1861, p. 342, t. 342. C. aethusaefolia, Carrière in Bev. Hortic. 1869, p. 10, cum Ic. Xylog.

A very graceful climber, perfectly hardy, as might be anticipated from its native country, which extends from the neighbourhood of Pekin — whence we have examined dried specimens collected by Dr. Bushell, late of the Chinese Embassy, and others — to the Amur river. It varies greatly in the breadth of the leaf-segments ; those of the originally-described form being divided into very narrow linear lobes, whilst in that figured here they are as broad as long, and in Maximovicz's specimen of this same variety (latisecta) they are an inch long and cuneiform. The flowers are, though not conspicuous, exceedingly graceful, very abundantly produced, and pendulous from stiff erect peduncles.
The specimen here figured is from a plant that has long been in the Kew collection, and was, no doubt, received from the St. Petersburg Botanic Gardens; it flowers as late as September and October.
Descr. A slender glabrous or puberulous climber. Stems and branches angled and grooved. Leaves one to two inches long, very numerous, twice or thrice pinnately divided ; segments narrow or broad, more or less deeply cut into linear obtuse or cuneate or irregularly rounded cut and toothed segments ; petiole stiff. Peduncles one to three from the nodes of the stem, one to two inches long, stiff, erect, curved at the top. Flowers one-half to three-fourths of an inch long, between cylindric and campanulate, white, base rounded. Sepals linear-oblong, coherent by their slightly overlapping margins, tips shortly recurved, rounded or subacute. Filaments dilated below, hairy. — J. D. H.

Fig. 1, longitudinal section of the flower ; 2 and 3, stamens ; 4, carpel ; 5, stigma : — all enlarged.

Book  (1872)  Page(s) 80.  
 
Descriptive Notes of Species & Varieties.
C. Æthusifolia, Turczaninow. — A pretty dwarf slender climbing sub-shrubby Mongolian species, attaining the height of from six to seven feet or more.  The leaves are biternately compound, usually opposite, with a very slender rachis, six to eight inches long, and somewhat resembling those of Æthusa, the leaflets being very deeply dissected.  The flowers are yellowish-white, numerous, drooping, bell-shaped,with a narrowish tube, upwards of half an inch in length, and divided at the end into four reflexed segments; they are solitary, on stiff slender erect petioles, and are collected into branched panicles. Its divided foliage, and the profusion of its flowers, give it a very elegant aspect in the blooming season, which is during August and September, when it is said that the flowers frequently happen to occupy a length of five feet on the stem, and to constitute a sort of girandole formed of little bells.  It appears to have found its way into the French gardens from the Botanic Garden of Naples; and a pretty woodcut figure is given in the Revue Horticole (1869, fig. 1); it is also figured in the Gartenflora for 1861 (t. 342).

Magazine  (1870)  Page(s) 24.  
 
Le Plantes Nouvelles de 1869.
.... Le Clematis œthusifolia, remarquable espèce sous-frutescente, à fleurs blanc jaunâtre, tubulaires en forme de cloche.

Magazine  (Oct 1861)  Page(s) 342, pl. 342.  Includes photo(s).
 
Clematis aethusaefolia Turcz. var. latisecta Maxim.
(Siehe Taf. 342.)
Ranunculaceae.
C. aethusaefolia Turcz. dec. III. pl. chin. in Bull. d. nat. de Mosc. V. pag. 181.
C, aethusaefolia var. latisecta Maxim. prim. fl. am. pag. 12. Rgl. fl. uss. nr. 4.

Eine strauchige Schlingpflanze, die von Maximowicz und Maack am Amur und Ussuri gesammelt ward. Reife Samen sammelte Maack, der überhaupt trotz der kurzen Dauer seiner Reise, sich die grössten Verdienste um Einführung lebender Pflanzen durch reife Samen aus jenen Gegenden erworben hat und solche haben im hiesigen Garten auch bereits gekeimt.
Von der in China wachsenden Stammart weicht die vorliegende Pflanze durch deutlichere, mehr abstehende Pubescenz der Blätter und des Stengels, sowie durch grössere, weniger stark zertheilte Blattsegmente ab.
Eine hohe Schlingpflanze, die, nach dem Vaterland zu urtheilen, unter leichter Laubdecke auch den Winter Petersburgs noch im freien Lande aushalten dürfte, Blätter gefiedert, gleich dem Stengel, den Blatt- und Blüthenstielen und Blumenblättern unter der Lupe kurzhaarig. Blättchen gestielt, 3theilig, und die Einzelblättchen aus keilförmigem Grunde fast rhomboidisch, eingeschnitten gelappt und gezähnt, vorn stumpf abgerundet mit aufgesetztem Spitzchen. Blumen weiss, nickend, in achselständigen Corymben mit fast walzig zusammenschliessenden Blumenblättern. (E. R.)

Translation:
Clematis aethusaefolia Turcz. var. latisecta Maxim.
(See plate 342.)
Ranunculaceae.
C. aethusaefolia Turcz. dec. III. pl. chin. in Bull. d. nat. de Mosc. V. pag. 181.
C, aethusaefolia var. latisecta Maxim. prim. fl. am. pag. 12. Rgl. fl. uss. nr. 4.

A shrubby climber collected by Maximowicz and Maack from the Amur and Ussuri. Maack collected ripe seeds, which, despite the short duration of his journey, made the greatest contribution to the introduction of living plants through ripe seeds from those areas and these have already germinated in the local garden. The present plant differs from the parent species growing in China in that it has clearer, more protruding pubescence of the leaves and stem, as well as larger, less divided leaf segments. A tall creeper, which, judging by the fatherland, could withstand the Petersburg winter in the open country under a light cover of foliage. Leaves are pinnate, like the stem, the leaf and flower stalks and petals are short-haired when viewed under a magnifying glass. Leaflets petiolate, 3-divided, and the individual leaflets from a wedge-shaped base, almost rhomboid, incised lobed and toothed, bluntly rounded at the front with an attached tip. Flowers white, nodding, in axillary corymbs with almost cylindrical petals. (Eduard Regel).