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ON HYBRID FOEMS IN THE GENUS SATYRIUM, WITH 
DESCEIPTIONS OF TWO NEW FORMS. 
By a. V. DuTHiE. ^ 
(With Plates LI-LIII.) 
This paper is concerned chiefly with the description of what appear to 
be two distinct natural hybrids belonging to the genus Satyrium. I find 
that the number of hybrids previously known among Satyrium species in 
South Africa includes only those mentioned by Bolus (Orchids of South 
Africa, vol. iii, Table XXXYI), Rolfe (Flora Capensis, vol. v, sect, iii, 
"p. 173), and two forms, the unpublished description of which, written by 
Miss Hume, I have been privileged to consult. 
The first hybrid (S. coriifolium X carneum) was described and figured 
from three living specimens found in association with both the supposed 
parent forms. According to the account (loc. cit.) the hybrid shows the 
characters of one or other of the parents as far as the individual vegetative 
parts are concerned, and, on the whole, judging from the figures and in the 
absence of a detailed description, it appears that the floral structures 
approach those of 8. coriifolium. 
The second hybrid, considered as such by Rolfe, was described as 
8. Guthre'ii by Bolus, who regarded it as a species, but noted the resem- 
blance between the column and that of 8. hicallosum, at the same time 
remarking on this character as unique among species of Satyrium. Rolfe 
{loc. cit.) is inclined to regard it on morphological grounds as a hybrid 
between 8. candidum and 8. hicallosum, and, justifiably, supports this 
contontion by the fact that these two species are associated in habitat. 
The two forms investigated by Miss Hume were examined with reference 
to the spike and floral organs only. Miss Hume regards her " type A " as 
a clear hybrid between 8. coriifolium and carneum, and considers that the 
hybrid nature is supported by the sterility of the ovary. She regards her 
" type B " as a hybrid between " type A " and 8. coriifoliiim, basing her 
decision on the fact that the pollen in " type A " is good, and also on the 
morphological characters of "type B." [I understand that the detailed 
descriptions of these forms will be published shortly in the Annals of the 
Bolus Herbarium.] 
The hybrids under description in this paper were found in each case 
