PARTICULAR INFLUENCE OF EACH PARENT OF HYBRIDS. 258 
certainly inclines the more to the mother (“ Gartenflora,”’ 1888, p. 521, 
plate 1282). 
4. Billbergia hybrida Krameriana, Wittm. (thyrsoidea 9 x amena é), 
has inherited from the father the strongly ribbed ovaria and the smaller 
number of bractez ; the lower flowers are also only provided with one 
bractea, as in the father (‘‘ Gartenflora,”’ 1888, p. 657). 
5. Billbergia Windii, Hort. Makoy (nutans ¢ x decora 2), hag the 
pendent habit of the mother and her mainly green petals; but, on the 
other hand, bas the numerous bractew and the entirely reflexed petals 
of the father (“‘ Gartenflora,” 1889, p. 7, with illustrations). 
6. Billbergia Perringiana, Wittm. (nutans ¢ x Liboniana 4), has the 
habit of the mother, but the beautiful indigo colour of the petals of the 
father (‘‘ Gartenflora,” 1890, p. 145, pl. 1318). 
7. Bullbergia Wittmackiana, Kittel (amcena 2 x vittata 3g), has the 
pendent inflorescence of the father, the habit and the leaves of the mother 
(“ Gartenflora,’’ 1891, p. 328). 
8. The difference between reversed crosses in Billbergias is very beau- 
tifully shown in the examples of H. Witte in Leyden, as described and 
illustrated in “ Gartenflora,’’ 1891, p. 563 :— 
a. Billbergia Leodiensis, H. L. B., is raised from vittata 2 x 
nutans ¢, and has the broad growth and broad leaves of vittata. 
b. Billbergia intermedia, H. L. B., the reversed cross, shows much 
narrower flaccid leaves, which nearly approach those of the mother. 
The illustrations given (J.c.) are very striking. 
The influence is also very strikingly shown in several species of Vriesea; 
for instance : 
9. Vriesea Wittmackiana, Kittel (Vriesea Barilletii ¢ x Morre- 
niana ¢), which has united the dense two-lined spikes and the fine 
dark red points upon the bract leaves of the mother with the magnificent 
scarlet red and golden yellow colour of the bract leaves of the father 
(‘‘Gartenflora,”” 1888, pp. 287, 553, pl. 1283). 
A similar and equally beautiful product is Vriesea Marie (EK. André 
in the Jowrnal Soc. Nat. Hort. France, 1889, p. 577) (Vriesea Barilletii 
@ x brachystachys ¢). Vriesea brachystachys, or carinata, is to a certain 
extent only a denser form of Vriesea Morreniana or of psittacina. Further- 
more may be named— 
10. Vriesea Alberti. E. André (V. incurvata ¢ x Morreniana 3), 
Revue Horticole, 1889, p. 800. It resembles V. incurvata more in its 
spike, but the bracts are not so incurved. 
ll. Vriesia Magnisiana, Kittel and Wittm. (Vriesea Barilletii 2 
x fenestralis g). This has almost as dense a spike as in Barilletii, 
whilst fenestralis has a looser one. It shows, however, the separated 
large tips upon the bract leaves as in fenestralis, not the numerous small 
points of Barilletii. The leaves are a trifle more reticulated than in 
Barilletii, and not so much as with fenestralis (‘ Gartenflora,”’ 1889, 
p. 843, with illustration). 
12. Vriesea insignis, H. L. B. (Barilletii 2 x splendens ¢). 
Habit of the mother, but the scarlet tint of the bract leaves of the father 
is, at any rate, so far transmitted that the closely set dark points of 
Barilletii have disappeared and the bract leaves are uniformly tinted 
