88 
XCVIII. ACANTHACE.E (CLARKE). 
[ Petalidium. 
or 0; bracteoles large, ovate or elliptic, concave, enclosing calyx, 
ultimately more or less scarious and reticulately veined. 
Species 18 in Africa and the Mascarene Islands; 1 in India, 
* PSEUDOBARLERIA. Two anticous calyx-segments con- 
nate more than $ their length. 
Innovations tomentose with stellate white hairs. 
also 15, P. canescens). 
Inflorescence lax or flowers solitary. 
Inflorescences without sterile branches interpersed. 
Leaves obvate-oblong, obtuse. 
Bracteoles 4 in. long. or more 
Bracteoles less than } in. 
Leaves (up to 2 in. long) with acute triangular 
tip . 
Spikes loose, several- flower ed, interspersed with 
sterile branches 2-3 in. long . 
Inflorescences very dense, near the base of the stem. 
Leaves round ; hairs stellate 
Leaves oblong ; ; hairs dendroid . . 
Innovations with simple sometimes gland-tipped ( (not 
stellate white) hairs. 
Inflorescence lax or flowers solitary (See also 15, 
P. canescens). 
(See 
Inflorescences without sterile branches inter- 
spersed., 
Leaves 3 in. long; cymes small; plant white 
strigose . 
Leaves 1 in. long; flowers 3- 1 together ; "hairs 
gland- tipped . . . 
Leaves 3 in. long, glandular pubescent ; flowers 
5-1 together . 
Inflorescence with sterile branches interspersed. 
Spines representing sterile branches, ? in. long, 
Corolla-tube 3 in. long. : . 
Corolla-tube 4 4-t in, long . 
Sterile branches 4-2 in. long, hardly epinous 
(See also 14. P. variabile). 
Leaves 3 in. long ; inflorescences benally near 
the base of the stem . . 
Leaves 1} in. long; inflorescences in upper 
part of the stem . 
Inflorescences dense, many-flowered. 
Whole plant densely and minutely (yellow or 
dusky) hairy 
Innovations densely white strigose ‘(no stellate 
hairs) . . 
Whole plant with innovations (except intlores- 
cences) glabrous 
** Ev-PrTatipiuM, Two  anticous 
connate less than } their length ; 
tube 1 in. long or more 
calyx-segments 
corolla fine red ; 
1. P. latifolium, C. 2. Clarke. 
> 
- 16. 
. P. latifolium. 
. P. englerianum. 
. P. physaloides, 
. P. Welwitschit. 
. P. halimoides. 
. P. lanatum. 
. P. ovatum, 
. P. glandulosum. 
P. Currort. 
. P. spiniferum, 
. P. huillense. 
. P. rupestre. 
. PB. glutinosum. 
. P. variabile. 
. P. canescens. 
P. Lepidagathis. 
17. P. coccineum. 
Low shrub, covered densely with 
white stellate hairs which disappear from the older parts. 
Leaves up 
