Website/Catalog  (27 Jul 2011)  Includes photo(s).
 
Clematis campaniflora Brot.
Frost hardy, vigorous, deciduous climber with pinnate leaves, the leaflets in groups of three, bearing small, fragrant, lilac flowers in great profusion in terminal cymes in mid to late summer.  To 6m.  [RHSD, Hortus, Hilliers’.]

Horticultural & Botanical History
‘A native of Portugal, first described by Brotero, who found it in hedges, by the road from Oporto to Coimbra.
It is a climbing plant, growing to the height of eight feet or more, with many branches, towards the extremities of which the flowers are produced; with us they come out in the latter part of the summer; they are very delicate, of a clear purplish white.’  [LBC no.987/1825]. 
Introduced to England in 1810.  [JD].  Originally described by Prof. Brotero in 1804 in the Flore du Portugal.  [IH p.78 Vol.2/1855].  The flower in Loddiges Botanical Cabinet appears almost pure white compared with the pale lilac of the Illustration Horticole figure used here.

History at Camden Park
Listed in all published catalogues [T.320/1843].  A plant was presented to the Sydney Botanic Garden by William Macarthur on September 15th 1847 [RBGS AB].

Website/Catalog  (29 Jul 2010)  
 
Clematis viticella campaniflora [Macarthur]
Clematis viticella L. x Clematis campaniflora Brot., a hybrid probably raised at Camden.  I have found no specific description of this hybrid.

Horticultural & Botanical History
Many of the garden cultivars of Clematis viticella are actually hybrids, particularly valued for their colourfull flowers and ability to scramble over shrubs or small trees, or even ground cover plants.  [RHSD].  Clematis hybrids, unspecified, are shown growing as ground covers in a bedding arrangement in a figure in Flore des Serres.  [FS p.22/1874]. 

History at Camden Park
Listed in the 1845, 1850 and 1857 catalogues [T.329/1845].  A plant was presented to the Sydney Botanic Garden by William Macarthur on September 15th 1847 [RBGS AB].

Book  (Oct 2001)  Page(s) 142.  Includes photo(s).
 
Clematis campaniflora
Viticella Group
Origin: Portugal and Spain
Species
Introduced into England in 1810
... single flowers... nodding, bell shaped, white tinged with violet... four tepals... stamens are greenish cream...

Book  (1912)  Page(s) 83.  
 
Clematis L. — N. Pff. iii. 2. 62. — Ranunculaceæ-Clematideæ.
campaniflora Brot. — DC. i. 9; Lodd. B. C. t. 927; Kuntze, Mon. 137. — Potugal, Spain. — ♄ §.  April.

Book  (1906)  Page(s) 55.  
 
Clematis Campaniflora.  (Bell-fllowered Clematis). Portugal.  1810.  12 to 18 feet.  Flowers small, bell-shaped, purplish white, fragrant.  June and July.  Syns. C. campanulata; C. crispa (Hort); C. parviflora; C. revulata; C. viornioides.
A slender climber, with bi-ternately, pinnate leaves.

Magazine  (30 Jul 1892)  Page(s) 73.  
 
C. campanuliflora Brot., d'Espagne; tige de 1 à 2 m., fleurs pourpres.

Magazine  (1877)  Page(s) 266, 267.  
 
p. 266: Clematis revoluta (Comice horticolle)

p. 267: Clematis campaniflora (Dc.) ou viornoides (Hort.); rose.
Clematis crispa revoluta (Lin.); pourpre.

Book  (1863)  Page(s) 1017.  
 
On cultive encore les Clematis triternata, revoluta, cylindrica et Japonica.

Magazine  (Sep 1856)  Page(s) 97-98.  Includes photo(s).
 
Della Clematis campaniflora.
Tavola VIll
Quando si tenne parola in generale delle Clematiti (vedi vol. I, pag. 247 di questo giornale) non si fece alcun cenno di una bellissima specie, la cui originaria conoscenza è dovuta a Brotero, che fu professore di botanica all'Università di Coimbra; ma siccome è nostro pensamento di fornire di quando in quando notizia di quelle piante che giovino a compimento di speciali famiglie, cosi in oggi ci intratterremo brevemente della Clematis campaniflora del Brotero, perchè essa prospera a meraviglia all'aria libera, e perchè tuttavia rara si mostra la sua coltivazione.
La Clematis campaniflora porta numerosi e lunghi rami, assai deboli e molto delicati, finamente solcati, del tutto glabri, ma poco ripartiti in altri più piccoli rami. Le foglie si tengono tra loro opposte e sono non altrimenti dilicate come i rami, tuttochè siano grandi in loro confronto. I picciuoli comuni portano dapprima da ciascun lato due piccoli picciuoli, che sorreggono ciascuno tre foglioline, e terminano dappoi con altre tre fogliette, cioè a dire le foglie sono triterne decomposte. Per un successivo abortimento, che si mostra cosi frequente in queste piante, i picciuoli, che stanno in prossimità dei rami, non sono altrimenti trifogliate, ed è in ciò forse la cagione per cui tanto dal Brotero, quanto dal De Candolle venne riguardata la Clematis campaniflora a foglie biterne. I fiori sono piccoli, ma oltre ogni dire simpatici, d'un bianco violaceo o lilacino, e di solito terminano i peduncoli che sono uniflori.
La coltivazione di questa specie non è in generale, come delle altre sue consorelle, di difficile esecuzione, e, se bene risponde in ogni specie di terreno, è però pianta che richiede una esposizione assai calda e alquanto riparata. Si moltiplica per innesto o per talea.
Noi non entreremo nel campo della disputa insorta sul valore fitognostico delle Clematiti e che dà argomento in oggi a contrarj pensamenti appo i botanici pratici; ma bene crediamo di richiamare l'attenzione dello studioso a che se ne faccia argomento di serie considerazioni per venire allo scioglimento di tanta quistione, che certo grandemente im. pastoja il progredimento della scienza.

Translation:
Of Clematis campaniflora.
Plate VIll
When general mention was made of Clematites (see vol. I, page 247 of this newspaper) no mention was made of a beautiful species, the original knowledge of which is due to Brotero, who was professor of botany at the University of Coimbra ; but since it is our intention to provide news from time to time of those plants that are useful for completing special families, so today we will briefly discuss the Clematis campaniflora of Brotero, because it thrives wonderfully in the open air, and because it is nevertheless rare shows his cultivation.
Clematis campaniflora bears numerous long branches, very weak and very delicate, finely furrowed, completely glabrous, but little divided into other smaller branches. The leaves are held opposite each other and are not otherwise as delicate as the branches, although they are large in comparison. The common pedicels first carry two small pedicels on each side, which each support three leaflets, and then end with three other leaflets, that is, the leaves are decomposed triternals. Due to a subsequent abortion, which is so frequent in these plants, the pedicels, which are close to the branches, are not otherwise trifoliate, and this is perhaps the reason why both Brotero and De Candolle considered Clematis campaniflora biternate. The flowers are small, but beyond all pleasant, of a purplish or lilac white, and usually end in the peduncles which are unifloral. 
he cultivation of this species is not generally, like its other sisters, difficult to carry out, and, although it responds well in every type of soil, it is however a plant that requires a very warm and somewhat sheltered exposure. It multiplies by grafting or cutting. We will not enter into the field of the dispute that has arisen on the phytognostic value of Clematites and which today gives rise to contrary thoughts among practical botanists; but we believe we should draw the scholar's attention to make it the subject of serious considerations in order to resolve this question, which is certainly very important. hampers the progress of science.

Magazine  (5 Jan 1856)  Page(s) 3.  
 
A. Verschaffelt, Nurseryman, Ghent (Belgium)....also directs Attention to his Journal L'ILLUSTRATION HORTICOLE, which is one of the best Floricultural works on the Continent. The last Number (12th Number of the second Vol.) is out, and contains:-

2. Rose Perpetual Panaché d'Orléans.
3. Clematis campaniflora....