TABULA 3045. 
THESIUM COSTATUM, 4. W. Hill. 
SANTALACEAE. ‘Tribus THESIEAE. 
T. costatum, A.-W. Hill in Kew Bull. 1915, p. 25; species T 
racemoso, Bernh., affinis, foliis costatis rigidis, floribus pedunculatis 
distinguenda. 
Rhizoma gracile, erectum ; caules pauci vel subnumerosi, superne 
ramosi, costati vel angulares, glabri. Folia laxe disposita, linearia, 
0-6-1 cm. longae, ceterum foliis similes ; pedunculi bracteis breviores 
vel paulum longiores, compressi, subgraciles; bracteolae floribus 
breviores vel longiores, lineares, acutae, glabrae. Perianthiwm 
3 mm. longum; segmenta triangulari- -lanceolata, 1-5 mm. longa, 
cucullata, marginibus fimbriatis membranaceis, cucullo rostrato et 
leviter papilloso. Antherae 0-75 mm. longae. Stylus 1-5 mm. longus, 
antheris superans. Fructus campanulato-globosus, perianthio per- 
sistente incluso circiter 6 mm. longus, prominenter 10-costatus, inter 
costas crasse reticulatus. 
Sourn Arrica: Orange River Colony ; Sopa A Richardson ; 
Basutoland ; Leribe, December, Dieterlen, 647; Tra svaal; near 
Pretoria, November, Wilms, 1308a; Swaziland; near ‘Biaie orp, 
0 m., January, Bolus, 12273; near Mbabane, 1410 m., January, 
aoe 12277 ; Griqualand East ; Tyson. Natal; near Camperdown, 
m., Dece mber, Schlechter, 3284; Weenen, 1050 m., January, 
Wood, 3582 ; between Pietermaritzburg and Greytown, Nove mber, 
Wilms, 2252 ; near Pietermaritzburg, Wilms, 2254; near Emberton, 
December, Seileckter, 3239; Inanda, Wood, 1141; without precise 
locality, Gerrard, 1281 
The erianth-segments are glabrous and the species belongs to the 
section Imberbia, sub-section Subglabra, of the genus ium. e 
rigid, ribbed leaves and te serve to distinguish 7’. costatwm from 
allied species —A. W. Hin 
Fia. 1, piece of stem with leaves showi 
external ‘glands are well seen; 3, a flower 
perianth-segments, the disk, stamens, and pist 
hairs attached to anthers; 5, a fruit with persistent 
ribs and reticulations. All enlarged. 
perianth and prominent 
