478 MR. H. BOLUS'S CONTRIBUTIONS 
sepals and labellum project forwards. The rostellum, with its 
fleshy side-appendages, the absence of arms, and the consequent 
close approximation of the glands, shows a decided affinity with 
the section Monadenia, though the appearance of the plant as a 
whole is very different. 
Disa UNCINATA, Bolus, n. sp. Glabra erecta vel leviter decuin- 
bens 25-33 em. alta; tubera obovata 1 em. longa; caulis inter- 
dum flexuosus distanter foliosus ; folia radicalia 3—4, lineari-lan- 
ceolata acuta, basi amplexieaulia, laxe patentia, 5-10 em. longa, 
caulina 2-3, conformia minora erecta; spica laxe 8-13 flora; 
bractez foliaceew ovariis breviores; sepala lateralia oblonga con- 
cava acuta infra apicem dorso mucronulata, patentia, 07 em. 
longa; galea horizontalis elliptica emarginata, ore circa 0'4 cm. 
lato, calcare 0:4 em. longo, tubo constricto, apice inflato przedita, 
tota 1:2 em. longa; petala lateralia falcata acuminata, basi dila- 
tata dentata, 0-4 cm. longa; labellum lineare acutum 0'4 em. 
longum; anthera horizontalis ; stigma magnum pulvinatum mar- 
ginatum; ovarium cirea 1'2 em. longum. (v. v.) 
Hab. In solo argillaeeo humido in montibus circa Mitchell’s 
Pass et flumen Hex River, alt. 1200-1400 ped., flor. Oct., H. 
Bolus, herb. No. 5279! 6095!; Albany, Cooper 1878 ! ; Baines' 
Kloof, Cooper 3598 ! 
In the dried state this resembles D. caulescens, Lindl., but 
differs in galea, spur, and petals; the habit is similar. Small and 
laxly-flowered specimens might be confused with D. ocellata, 
Bolus ; but, besides other differences, the leaves in the latter are 
much narrower and erect, and the galeaisacuminate. The sepals 
are a dull white, passing at the back of the galea and the tips of 
the side sepals into a dull brown. The petals are pale yellow 1n 
front with brown points; labellum pale yellow. While most of 
our Orchids love a light almost sandy soil, this seems generally to 
prefer a stiff moist greyish clay. 
Disa MACULATA, Linn. f.! Suppl. p. 407!* D.caule decumbente 
* [Mr. Bolus had described this plant as a new species; but as I bave had the 
opportunity of comparing it with Thunberg's type specimen of Disa maculata, 
Linn. f, with which it is identical, and that plant being very imperfectly 
known, it appears desirable that Mr. Bolus’s description from the living plant 
should be published, especially as Lindley has wrongly placed it in the genus 
Schizodium. The remarks following the above description were received me 
Mr. Bolus after he had been informed of the result of my comparison of his 
plant with Thunberg's type.—N. E. Brown, Herbarium, Kew. ] 
