This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
A plant was distributed a few years ago by the Horticultural Society under this name, but I do not hear of it as having flowered in many places, nor have I ever seen it except in my own greenhouse. It is nevertheless by far the most splendid in color of the splendid genus Passiflora, and moreover a hardy greenhouse climber. Neither Passifloraprmceps (racemosa), the Brazilian stove species, nor P. Le Michauxii, nor P.Kermesina, all stove plants though they be, equal in color Tacsonia manicata. Its color is intense orange scarlet, so identical with the average scarlet Geranium, that petal being laid upon petal you can hardly distinguish a shade between them, while the rays, which are nearly black, enhance this color, and give the effect of a scarlet Anemone. The flower is nearly the same size as Passiflora caerulea. It is nothing like so compact as the older Tacsonias, and may be flowered in any ordinary greenhouse, and it is so hardy that its wood survives even when run through the iron bars of the lights within an inch of the glass in a cool greenhouse. Its only peculiarity is in pruning.
It flowers, not, as Passiflora caerulea, on the wood of the year, but upon laterals produced on that wood, and the roost successful treatment is to shorten the principal shoots in August, when it forms laterals which produce flowers the following spring. I suspect that in a warmer house than mine it would flower early in spring or perhaps in autumn, but as the thermometer falls with me to 35° or 36°, it sometimes loses some of its buds which are formed in autumn; but even thus, enough remains to make the plant very gay in the spring, and, well cultivated, it would be by far the most gorgeous climber we know. - -J. H. S. 0., in Cottage Gardener.