38 ACANTHACEE (Clarke). [Crabbea. 
XIV. CRABBEA, Harv. partly. 
Bracts large, ovate or oblong, often spine-toothed; bracteoles 0. 
Calyx divided nearly to the base; segments 5, linear, aristate, with 
long unicellular hairs; posticous segment more lanceolate at the 
base. Corolla 1—% in. long, white or pale pink; tube eylindric, 
funnel-shaped upwards; anticous lip 3-lobed, fulded down over the 
other in bud. Stamens 4, subsimilar; anther-cells 2, at nearly 
equal height, muticous at the base; pollen globose, reticulate. 
Ovary glabrous ; ovules 4—2 in each cell ; style glabrous, articulated 
on the ovary ; 1 stigmatic lobe a short oblong plate, the other absent. 
Capsule small, narrow-oblong, 8~4-seeded; seeds discoid, covered 
with hygroscopic hairs. 
Low shrubs; hairs simple, leaves entire, obtuse; inflorescence in dense 
compound axillary or peduncled heads; floral leaves (bracts of authors) ovate, 
outer very large empty, inner containing apparently a cluster of 3-5 flowers, 
which really form a condensed unilateral raceme ; proper bract to each flower 
linear-lanceolate or 0. 
Species 8, in South and East Tropical Africa, very closely allied. 
The stems often grow on, above the highest axil that carries a head, the leaves 
above the head being much narrower than those below. 
Floral leaves with innocuous marginal spines ; 
Leaves ovate or oblong : 
Leaves 1-4 in. long: 
Outer floral leaves papery, minutely 
hairy ... ee as oie ss (1) Bana, 
Outer floral leaves herbaceous, softly 
heity.... ees ue <i --. (2) hirsuta. 
Leaves 6 in. long... re bis ... (3) robusta. 
Leaves, at least the upper, linear “e ... (4b) angustifolia. 
Floral leaves without marginal spines; heads pe- 
duncled ; 
Leaves elliptic or somewhat obovate... .-. (5) peduuculata. 
Leaves linear... (6) Galpinii. 
1. C. nana (Nees in DC. Prod. xi. 162); branches 2-12 in. long, 
trailing, flexuose ; leaves up to 4 by 12 in., oblong-elliptic, when 
mature scabrid on the nerves beneath or nearly glabrous, base narrowed : 
petiole 0—§ in. long; heads 1-2 in. in diam., sessile or short- 
peduneled ; outer floral leaves 11 by 2 in., acute, finally glabrescent, 
papery, marginal spinescent teeth 3-1 in. long; calyx-segments 
+ in. long, usually thinly hairy at the top, sometimes densely hairy to 
the base; corolla = in. long; capsule 2 in. long. J. Anders. in 
Journ. Linn. Soe. vii. 32 ; Lindau in Engl. & Prantl, Pflanzenfam. 
iv. 3B, 313; C. B. Clarke in Dyer, Fl. drop, Afr. ¥. 118... 6, 
cirsioides, Nees in DC. Prod. xi. 163. Ruellia nana, Nees in Linnea, 
xv. 355; EH. Meyer in Drége, Zwei Pflanzengeogr. Documente, 135, 
aS R. cirsioides, Nees in Linnea, xv. 354 ; Drége in Linnea, 
xx. 200. 
Coast Recion: Humansdorp Diy.; between Galgebosch and Melk Ri 
Burchell, 4765! Alexandria Divy.; Zuurberg hinge 2000-8000 ft., hed 
—_ Albany ; Glenfilling, 1000 ft., Drége ! Queenstown Diy. (Tambukiland) ; 
eyher ! 
