Observations on some Hybrids between Dro= 
sera filiformis and D. intermedia. 
By J. MurrHEAD MAcFARLANE, D. Sc. 
(WITH PLATE XT.) 
CCOMPANIED by a few of my students, an excursion 
A was made, during the third week of June, to the rich 
botanizing grounds near Atco, N. J. Amongst the 
pine-barren swamps of that locality was an area several acres 
in extent, that was partially flooded, but clothed with a pro- 
fuse surface vegetation of swamp or bog plants. These 
consisted almost entirely of the four species, Erzocaulon septan- 
gulare, Drosera intermedia, D. filiformis,anda yellow-flowered 
Utricularia. 
The later blooms of D. fiiformis were still abundant, but 
the involute flower stalks of D. intermedia were just unrolling, 
and as was proved later, these did not bloom fully till the 
second week of July. Casting one’s eye across the swampy 
mass of vegetation, the clusters of pale pink elongated leaves 
of D. fiiformis contrasted strongly with the short, dense 
clusters of crimson-pink leaves belonging to D. intermedia. 
After a considerable stretch of the marsh had been exam- 
ined, my attention was arrested by a rather distant group of 
plants, somewhat intermediate in height and color between the 
two common species around. A nearer examination of the 
eleven plants composing the group, suggested the possibility 
of their being natural hybrids between the above-named 
species. They were carefully removed, without injury, to one 
of the greenhouses in the University Botanic Garden, where 
they have since been grown and watched. A continued and 
careful exploration of the swamp failed to reveal the presence 
of additional plants or plant clusters like those already found. 
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