CXXXVI. ORCHIDE^. 
164 
[Saccolabinni. 
linear, very rarely longer. Species about 200, Africa, Indo-Malaya, 
China. 
I am quite unable to keep separate the genera Cleisostoma and Sarcanthus, 
based on the development of the calli in the spur, but keep them as sections. 
§ 1. Calceolaria. Racemes usually short. Lip basin-shaped, with no side- 
lobes or calli. 
Terminal lobe denticulate; leaves coriaceous . (1) S. bigibbum 
Terminal lobe entire; leaves thickly coriaceous . (2) S. patinatum 
Lip saccate entire acuminate; flowers very small; 
leaves lanceolate . . . . (3) S. minimiflorum 
§ 2. Cleisostoma. Spur short broad, subglobose. 
red. 
Leaves lorate bilobed. 
Stem tall climbing; panicle wide spreading; 
midlobe ovate ..... 
Stem short and thick; panicle lax; midlobe 
hastate tongue-shaped .... 
Stem stout short; panicle with 2 branches only; 
midlobe ovate ..... 
Stems short; flowers in a raceme or with 1 to 2 
branches. 
Callus in mouth bifid. 
Scape several inches long; flowers fairly 
large ...... 
Scape very short; flowers small 
Callus of 2 ridges at base of midlobe, elevated 
ridge in spur ..... 
Callus crescent-shaped, side-lobes ovate 
Callus semi-circular, side-lobes truncate 
Calli o; leaves flaccid, spur cylindric . 
Lip boat-shaped; midlobe large ovate 
Flowers yellow spotted 
(4) S. latitolium 
(5) S. suffusum 
(6) S. validum 
(7) S. hortense 
(8) S. parvum 
(9) S. setulense 
{10) S. Hobsonii 
(11) S. uteriierum 
(12) S. sylvestre 
(13) S. rugosulum 
§3. Sarcanthus. Spur horn-shaped; midlobe fairly large, callus entire 
or lobed on back of spur with a ridge from front wall more or less dividing 
the spur in 2. Flowers brown-red with greenish central line, lip violet or 
white. 
Leaves terete. 
Leaves slender, spur not septate 
Leaves thick, spur septate or partly so. 
Midlobe triangular blunt, callus anchor-shaped 
Midlobe ovate acute ..... 
Leaves flat, the point terete subulate 
Leaves flat, tip acute bilobed, base sub-petiolate. 
Stem very tall climbing .... 
Leaves flat bluntly bilobed not narrowed at base. 
Stem stout; racemes long .... 
Stem short, 3 to 6 in. tall. 
Midlobe ovate septum complete . 
Midlobe ovate, septum o 
Midlobe reniform, spur with 2 pubescent keels 
(14) S. halophilnm 
(15) S. Machadonis 
(i 6) S. Kunstleri 
(17) S. secundum 
(18) S. Scortechinii 
(19) S. densiflorum 
{20) S. pensile 
(21) S. fissicors 
(22) S. bicarinatum 
§ 4. Eu-saccolabium. Spur long in proportion to sepals, no septum. 
Raceme very short of 2 or 3 very small flowers; 
stems long slender. 
Lip midlobe linear bifid small . . . (23) S. tenuicaule 
Lip midlobe lanceolate entire . . . (24) S. miserum 
