Encloses memorandum on tendrils. Nature of tendrils in Modecca.
My dear Sir/
I enclose some memoranda of tendril literature which perhaps some day you may look
at. From analogy, & their relation structurally to
Cucurbits I thought the tendrils of Passionflowers must
Yours very sinc
The foliar nature of the tendril in Modecca (one or two species at least) clearly breaks down:— branches of the tendril bearing flowers & fruit.
Have you seen `Recherches nouvelles sur la cause du mouvement spiral des tiges volubiles' par M. Isidore Léon.—in `Bulletin de la Société Botanique de France' Vol. V. (351. 610. &c.)?
If not shall I abstract it for you? | D. O.
- f1 4417.f1The date is established by the relationship between this letter and the letter to Daniel Oliver, 31 March .
- f2 4417.f2See enclosure. No further enclosures containing memoranda of tendril literature have been found.
- f3 4417.f3Oliver had thought that the tendrils of Passiflora, and apparently of the Cucurbitaceae, were possibly foliar in origin, but were best described as modified branches; he did not think they were modified flowers, which he said were axial structures (see memorandum and letter from Daniel Oliver, [28 January -- 8 February 1864] and 12 March 1864). However, after reading CD's letter of 11 March , and since writing his letter of 12 March 1864, Oliver was evidently drawing new conclusions about the tendrils of Passifloraceae; Modecca was sometimes placed in the Passifloraceae (see n. 10, below). For Oliver's continuing consideration of CD's queries, see also the postscript to his letter of [17 March 1864]. CD suspected that Passifloraceae tendrils were derived from flower peduncles (see letter to Daniel Oliver, 11 March , and letter from Daniel Oliver, 12 March 1864 and nn. 2 and 4). For CD's earlier queries to Oliver about the origin of tendrils, see letter to J. D. Hooker, [27 January 1864] and nn. 19--23.
- f4 4417.f4Oliver refers to Augustin Pyramus and Alphonse de Candolle's Prodromus systematis naturalis regni vegetabilis (A. P. de Candolle and Candolle 1824--73). Augustin Pyramus de Candolle, the author of the third volume, includes the following in his description of what he calls the `Passifloreæ' (ibid. 3: 321): `Pedunculi axillares, alii abortivi cirrosi, alii floriferi uniflori … [Peduncles axillary, some abortive and tendrilled, some bearing single flowers …]'. In A. P. de Candolle and Candolle 1824--73, 3: 336--7, Augustin Pyramus de Candolle describes four Modecca species as bearing flowers on axillary tendrils.
- f5 4417.f5Charles Victor Naudin discussed the derivation of tendrils in his article `Organographie végétale. Observations relatives à la nature des vrilles et à la structure de la fleur chez les cucurbitacées' (Naudin 1855, pp. 6--11, 17). CD referred to Naudin's work on Cucurbitaceae tendrils in `Climbing plants', pp. 104 and 114, but not to his views on their derivation.
- f6 4417.f6Joseph Dalton Hooker.
- f7 4417.f7In A. P. de Candolle and Candolle 1824--73, 3: 297, Nicolas Charles Seringe, author of the Cucurbitaceae, wrote under the tribe `Nhandirobeæ': `Cirrhi axillares pedunculares [Tendrils axillary and provided with a peduncle]'; under the tribe `Cucurbiteæ', he wrote: `Cirrhi laterales stipulares [Tendrils lateral and with stipules]' (ibid., p. 299). In `Climbing plants', p. 73, CD mentioned this conclusion regarding the different homological natures of tendrils in two of the Cucurbitaceae tribes, and thanked Oliver for the information.
- f8 4417.f8In `Climbing plants', p. 92, CD wrote that he had heard this from Oliver. See also letter to J. D. Hooker, 31 [May 1864] and n. 5.
- f9 4417.f9Oliver refers to Léon 1858; see letter from Daniel Oliver, [1 April 1864]. CD cited the work of Isidore Léon in `Climbing plants', pp. 5, 25, and 96.
- f10 4417.f10CD refers to John Lindley, who, unlike the Candolles, placed Modecca in the Papayaceae (Lindley 1853, p. 322). CD mentioned the tendrils of Brunnichia and Modecca after discussing Passiflora species in `Climbing plants', p. 92.