Magazine  (Apr 1919)  Page(s) 50.  
 
Clematis recta ...Une forme lathyrifolia Dess., à folioles plus membraneuses, quelques-unes assez semblables à celles du Cl. Flammula, à pétioles à divisions plus ou moins tortillées, habite les Pyrénées-Orientales.   .... F. M. [Francique Morel]

Magazine  (Apr 1913)  Page(s) 149.  Includes photo(s).
 
Clématite à feuille de Lathyrus. — Cette jolie Clématite appartient au groupe des espèces vivaces dont les tiges sont dressées, non sarmenteuses, et disparaissent chaque année en hiver. Elle passe pour une variété de la Clématite droite (Clematis recta) cultivée comme plante vivace dans les jardins. Cette dernière comprend une sorte à fleur double très méritante. Elle appartient à la section des Flammula D. C., qui est caractérisée, dans les grandes lignes, par un involucre et des pétales nuis, mais dont le calyce a 4-5 sépales est blanc. La Clématite droite et sa voisine à feuille de Lathyrus fleurissent en panicule rameuse dans le courant des mois de juin et de juillet. L’une et l’autre peuvent être utilisées à la composition des gerbes de fleurs fort à la mode dans la décoration des appartements. Elles sont rustiques, et quoique ne craignant pas le soleil, elles peuvent prospérer dans les parties ombragées des jardins. Leur multiplication est facile, soit par semis, soit par la division des souches.
Il ne semble pas que les botanistes « pulvérisateurs » se soient occupés des deux Clématites dont il vient d’être parlé, ét voici pourquoi : MM. Rouy et Foucault, dans leur Flore de France, qui se complaisent à mentionner les formes et les variétés des types qu’ils décrivent, n’en signalent point pour les deux sortes précitées. Pour le seul Clematis recta, nous avons eu l'occasion de cultiver six variétés faciles à distinguer entre elles.

Magazine  (1877)  Page(s) 269.  
 
Clematis lathyrifolia (A. Leroy).

Magazine  (1842)  Page(s) 413.  
 
... it seems desirable to mention the following, as the principal plants new to the country, imported through their means since the 1st of May, 1830, and now existing in the Society's collections, and more or less extensively distributed.
From Mr. C. A. Fischer, Göttingen, F.C.M.H.S.
1835. Clematis lathyrifolia.

Magazine  (1839)  Page(s) plate 61.  Includes photo(s).
 
Clematis lathyrifolia. Large-flowered erect Clematis...
C. lathyrifolia; herbacea, erecta, foliis pinnatis: foliolis ovato-lanceolatis integerrimis 2-3-lobisve, corymbis paniculatis, sepalis 4-5 obovatis tomentosis, carpellis cum cauda villosis.
C. lathyrifolia. Besser. sec. Reichenbach fl. excurs. germ. 2. 734.

The two common hardy herbaceous plants, Clematis erecta and angustifolia, although placed at a great distance from each other in M. DeCandolle's distribution of the genus, are nevertheless so nearly related that there can be no doubt of their immediate affinity. In fact they cannot be distinguished by the characters given them in the Prodromus, which are almost equally applicable to either. C. angustifolia is said to have one flower only on a common stalk, which is never the case in the garden specimens, neither do I find it so in my wild specimens of the supposed variety C. lasiantha from Dahuria. The real distinction between them consists, as Reichenbach has well observed, in the narrow leaves and hairy carpels of one, as compared with the broad ovate leaves and smooth carpels of the other.
But to which are we to refer the present plant? Reichenbach considers it a mere variety of C. erecta, which is impossible, for it has the leaves and fruit of C. angustifolia ; but it will not arrange exactly with the latter plant, for its flowers are in a loose corymbose panicle, and are much larger, and its whole aspect is different; in the size of its flowers it corresponds with the above-mentioned C. lasiantha, which seems a good species, and not a mere variety of C. angustifolia. This may indeed be regarded as a variety of C. lasiantha; but it wants the wool in which the flower-buds of that species are enveloped.
What its native country may be I am unable to ascertain; it is said by Reichenbach to have received its name from Professor Besser; but it is not noticed in that writer's Enumeration of the plants of Podolia, Bessarabia, and other dismemberments of the ancient kingdom of Poland, nor do I find a trace of it in any book except Reichenbach's Enumeration, above quoted.
I have only seen it in the garden of the Horticultural Society, where it was received from the late Mr. Fischer, of the Gottingen garden, under the name here adopted.
It is a very showy hardy perennial, growing three or four feet high in any good garden soil, and flowering freely from June to August.
It is increased freely by division of the old plant when in a dormant state, or by seeds, which should be sown in the spring; the seedlings will not flower before the second season.
It is rather a straggling plant if left to nature; but if tied up regularly to a stake, it makes a beautiful object in a flower garden.