ON THE PURPLE TREFOIL FOUND IN SCILLY. 3 
It is scarcely necessary to discuss the distinetion of our plant from 
the 7. hybridum, Linn., although they have been guessed to be 
identical. The fistulose, ascending, never-rooting stems of T. Aybridum 
completely-separate that species from our plant. We possess a speci- 
men of T. hybridum from the original Linnean locality mentioned in 
the ‘Flora Suecica’ (ed. 2. p. 258), viz. “ Habitat in Uplandia inter 
Upsalam et Holmiam, ad Alsike et fere per totam viam." It is con- 
tained in the Herb. Normale of Fries (vii. 36). We should remember 
that the 7. hybridum of Savi (Obs. in varias Trif. Sp. 92, and Botan, 
Etrusc. iv. 41) and that of Seringe (in De Cand. Prod.) is Z. nigres- 
cens, Viv.; and that the similarly-named plant of some other authors 
is T. elegans, Savi. 
It is difficult to form any satisfactory opinion concerning the T. repens 
B. rubescens (Ser. in De. Cand. Prod.) which was obtained from near 
Geneva, unless we consider it to be the not unfrequent form of 7. 
repens with purplish flowers. It may be the plant now under conside- 
ration, for the namé would apply more correctly to this than the tinted 
flowers of the ordinary T. repens. 
^ Our Plate is a representation of the living plant, roots of which were 
sent from Scilly, at the desire of Mr. Townsend, in May, 1863. "The 
editor possesses living plants of it, and through his kindness we have 
one in the Botanic Garden at Cambridge. Our dried specimen was 
gathered by Mr. Townsend in the Island of Tresco, Scilly, flowering in 
June, 1862 ; but apparently the far-creepiug stems continue to produce 
flowers during most of the summer. Mr. Townsend says, * the purple 
Trefoil was very abundant in the low wet sandy flats near the Tresco 
pon ;. and he believes that he observed it in the other islands. 
The 7. elegans, Savi, has been occasionally introduced into this 
country with foreign agricultural seeds, but is scarcely able to stand 
the inclemency of our climate. See Brewer's Fl. of Surrey (p. 310), 
- where the name is accidentally but SEVES attributed to Linnæus. 
EXPLANATION OF PraTE XIII., — gibts repens, var., 
specimens in the garden of D r. Seem of stem, showing young 
root, eei and stipules. 2. Side view of [i * Beck view of flower. 4. Fron 
view of flower. 5. Vexillum. 6. One of the ale. 7. Carina. Allway 
B 2 
