S. candidus , the plant now figured, has pinnatifid leaves, 
with linear entire rather wavy segments. The flowers are 
pure white, without a stain of any other colour ; their lower 
lip has the middle lobe divided into two acuminate flat seg- 
ments, and the two lateral ones setaceous and shorter. The 
upper lobe is two-lobed. This was found wild near Coquimbo 
by Mr. Bridges, whose no. 1356 it is. It is a very pretty 
half-hardy annual, and well worth cultivation. 
S* Grahami , although figured with large flowers, is really 
a comparatively small-flowered species. Its leaves are some- 
thing like those of S. candidus, hut they are interruptedly 
pinnatifid, and more incised. The flowers are lilac, with a 
yellow upper lip, which is lanceolate acute and undivided ; the 
lower % consists of four acuminate incurved lobes, of which 
the laterals are short. 
Finally, S. retusus , the finest of the genus, has deep rose- 
coloured flowers, with an orange yellow emarginate oblong- 
upper lip, and a lower with four flat acute lobes, the lateral 
of which are shorter than the others. 
The following specific characters state the more important 
differences among the species. 
1. S. pinnatus (FI. Peruv. 1. t. 17. Bot. Mag. t. 2484. Hooker’s Bot. 
Misc. t. 73. S. porrigeus, Graham in Bot. Misc. t. 86.) ; foliis pinnatis 
laciniis pinnatifidis, corollae labio inferiore trilobo : lobo intermedio 
cucullato bilobo lateralibus falcatis spathulatis obtusis, labio superiore 
retuso v. emarginato. 
2. S . pinnatijidus ; foliis angustis pinnatifidis: laciniis rotundatis nanis in- 
tegris, corollae labio inferiore trilobo : lobo intermedio cucullato bilobo 
lateralibus falcatis spathulatis obtusis, labio superiore bilobo. Cap- 
sula S. pinnati sed duplo major. 
3. S. Hookeri (Gillies in Bot. Mag. t. 3070) ; foliis interrupt^ pinnatis foliolis 
linearibus serratis, corollae labio inferiore 4-lobo laciniis intermediis 
falcatis setaceo-acuminatis lateralibus setaceis, labio superiore cuspidato- 
acuminato. Capsula maxima. 
4. S. candidus; foliis pinnatifidis laciniis linearibus undulatis integris, corollae 
labio inferiore 3-lobo laciniis lateralibus setaceis intermedia biloba acu- 
tissima, labio superiore alte bilobo. 
5. S. Grahami (Gillies in Bot. Mag. t. 3044) ; foliis interrupte pinnatis 
foliolis linearibus v. oblongis serratis, corollae labio inferiore 4-lobo lobis 
acuminatis incurvis lateralibus abbreviate, labio superiore lanceolato. 
Capsula minima generis. 
6. S. retusus (Hooker Bot. Mag. t. 3045) ; foliis interrupt^ pinnatis laciniis 
linearibus obtuse serratis, corollae labio inferiore 3-lobo, laciniis lateralibus 
abbreviate intermedia acuta biloba, labio superiore oblongo retuso. 
