86 ACANTHACE® (Clarke), | Peristrophe. 
6 in., leafy, dense with numerous spikelets; outer bracts up to 
z in. long, linear, often rather widened upwards (i.e. narrowly 
subspathulate) ; calyx nearly 1 in. long; corolla exceeding 1 in. in 
length. 
Eastern Reoion : Natal; without precise locality, Gueinzius! Grant! 
Imperfectly known Species. 
6. P. Krebsii (Presl, Bot. Bemerk. 94) ; a glabrous shrub ; leaves 
nearly 1 by 2 in., lanceolate, cuspidate, narrowed at the base, 
petioled ; peduncles axillary, solitary, as long as the petiole, bifid ; 
pedicels shorter than the leaf, with setaceous bracts at their base ; 
bracteoles 2, unequal, enclosing the calyx, one similar to the calyx- 
segments, the other longer, cuspidate ; corolla white, thrice the 
length of the calyx; anther-cells divaricate ; style very long. 
Soura Arrica: without precise locality, Krebs, 251! 
XXVIII. HYPOESTES. 
Spikelets containing 1 flower with a rudiment of a second ; 
bracts 2, free or united at the base into a tube. Calyx much 
smaller than the bracts, divided nearly to the base; sepals 5, linear. 
Corolla pink or white ; tube slender, dilated near the top; lips 2, 
long. Stamens 2; anthers l-celled, muticous; pollen ellipsoid, 
longitudinally banded. Ovary with 2-1 ovules in each cell; style 
shortly and equally 2-fid. Capsule small, stalked, 4- or 2-seeded ; 
placente not rising elastically from the base of the capsule ; seeds 
smooth or rough, not hairy, 
Herbs or shrubs ; leaves entire, often wavy on the margins ; cymes of spike- 
lets axillary and terminal, in heads or elongate into dense or loose spikes. 
Species 60 ; extending from Africa to Australia. 
Bracts of the spikelet free to the base : 
Bracts of the spikelet oblong at the base, linear 
in the upper half: 
Leaves usually 1-2} in, long +» (1) aristata. 
Leaves usually 2-4 in. long ... Pre -.. (2) antennifera. 
Bracts of the spikelet narrowly obovate, very 
obtuse : 
Lower bract 4-3 in. long... Sts ... (3) triflora. 
Lower bract 2-$ in. long... ee ... (4) phaylopsoides, 
Bracts of the spikelet connate at the base into a 
distinct tube : : 
Bracts of the spikelet hairy or densely pubes- 
cent Ses ie i wes ves -.. (5) verticillaris, 
Bracts of the spikelet glabrate or scarcely 
puberulous at st ate fee -- (6) Forskalei. 
1. H. aristata (R. Br. Prod. 474, in Obs.) ; more or less pubescent ; 
branches 1-2 ft. long; leaves 1-2 by 3-1 in., ovate, narrowed at 
both ends ; petiole 0—2 in. long ; heads globose, axillary, of numerous 
1-flowered spikelets ; bracts of the spikelet free, 2 in. long, lower 
half linear-oblong, upper half bristle-like } two bracteoles 4-1 in. 
