20 J DR. CHARLES BOLLE'S JOURNEY 
sepalis petalis staminibusque  marcescentibus munita, utrinque 
oblique circumscissa, replo late alato membranaceo, valvis dorso 
gibbosis tuberculatis et quasi cristatis; dissepimentum latissime fe- 
nestratum, demum fere evanidum. Embryo 0 || ||. 
Dilophia salsa. 
Has. In salsis paludibus Tibetiz occidentalis, alt. 12-17,000 pedum. 
Herba pusilla, depressa, e collo prolifere ramosissima, ramis divaricatis 
prostratis. Folia anguste spathulata, oblonga vel linearia, integra vel 
sinuato-dentata. lores numerosissimi, racemis in umbellulas den- 
sas contractis, basi foliis stipatis. 
Prate XII. Fig. 1. Leaf. 2,3. Flowers. 4. Petal. 5. Stamen. 
6, 7. Pods. 8. Replum and dissepiment. 9. Seed. 10. Embryo :— 
all magnified. 
‘Dr. CHARLES BOLLE, on his Journey to Fuerteventura and Lancerotte. 
(Translated from a letter addressed to P. B. WEBB, Esq.) 
.. "The “antiquæ Purpurarie " have been as thoroughly explored as the 
season permitted. I have rambled over Fuerteventura from the point 
- of Handia to the Bocayna and the Isle of Lobos; and beyond the Bo- 
cayna, through all Lancerotte, from Papagayo to Haria. I was a 
little too late in the season, and my herborizations have not been so 
fruitful as I could have wished. Lancerotte and Fuerteventura, like the 
- Cape Verd Islands, are green only after the autumnal rains; even in the 
- month of April they are as bare as our fields in Germany are in March. 
I landed first at the Gran Carajal, and, beginning well, found at once 
— Tribulus cistoides and a species of Boerhaavia. Handia next furnished 
. me a harvest of some interest, particularly as Bourgeau remained there 
only one day, and it was visited neither by you nor by Berthelot. 
"The lofty Black Mountains descend gradually towards a cape formed 
by a yellow-tinted stony plain, surrounded by rocks of slight elevation, 
almost hidden beneath beds of sand and the triturated remains of land- 
shells. The vegetation here is formed of shrubby Chenopodiacea, Eu- 
. phorbia Paralias, a creeping Linaria with yellow flowers, an Ononis, a 
: Lotus, a Gnaphalium, and Zygophyllum Fontanesii, on which I found an 
. Orobanche. My attention however was more particularly called to a 
- small Cruciferous plant with rose-coloured flowers and spirally convo- 
= luted fruit* ; M. Berthelot assures me he never saw it before. The 
* Probably Malcolmia maritima, R, Br. (P. B.W.) 
