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NOVITATES AFRICANAE 
until later in the day than many other species. The name, diutinum, 
refers to these characteristics. 
Mesembrianthemum politum, L. Bolus (§ Bracteata). Erectum glaberrimum, 
18 — 25 cm. altum; rami adscendentes substricti, 2-5 — 12 cm. longi, 
internodiis 1 — 2 cm. longis; folia adscendentia connata, vagina 0-2 cm. 
longa, 3-quetra, supra plus minusve concava, acuta vel acuminata, inter- 
dum apiculata, apiculo recurvato, polita luteo-viridia, 1-5 — 2 cm. longa, 
0-3 — 0-5 cm. lata diametroque; flores 5-meri solitarii, ad 2 cm. diam. ; 
pedunculi 0-8 — 1 cm. longi, bracteis foliis simillimis, fere basi calycis 
positis; calyx cylindricus, basin versus attenuatus, tubo ultra ovarium 
producto leviterque constricto, 5-angulatus, angulis duobus acutis, 
ceteris obtusis vel rotundatis, 0-8—1 cm. longus, sine segmentis duobus 
foliaceis, ad 0-7 cm. longis, tribus ampliate membranaceo-marginatis, 
0-5 — 0-6 cm. longis; receptaculum intra dilatatum, supra ovarium ex- 
tendens; petala laxa pluri-seriata linearia, acuta vel acuminata, intima 
obtusa in staminodia transeuntia, rosea, 0-3 — 0-9 cm. longa, 0-1 cm. 
lata vel parum latiora; staminodia conferta, apicem versus erecta, ex- 
teriora alba, limpide papillata, teretiuscula, acuta vel subobtusa, interiora 
purpurea setaceo-acuminata, ad 0-2 cm. longa; stamina pauca incurvata, 
itaque antberae supra stigmata dependentes, blamentis purpureis, 
antheris orbicularibus, cum polline, albidis ; discus inconspicuus annularis ; 
ovarium supra planum, stigmatibus subulatis setaceo-acuminatis, vix 
0- 1 cm. longis; capsula demum obconicum, 5-angulatum, ad 1 cm. diam. 
Cape Province: South-Western Region; Ladismith Div., Muiskraal, 
alt. 1400 ft., if. Sept. 1923, Dr John Muir (Bolus Herbarium, No. 17417). 
Distinguished from all the other species of the section Bracteata by 
the polished leaf-surface. 
Mesembrianthemum Henricii, L. Bolus. Epapillosum glabrum, fruticosum, 
ramis adscendentibus rigidis, ad 25 cm. longis, 0-4 cm. diam., ramulis 
floriferis gracilibus, 1 — 4 cm. longis; folia connata, vagina 0-1 cm. longa, 
subfalcata, subclavata, turgide triquetra vel carina plus minusve obscura, 
glauco-viridia laevia, ad0-9 cm. longa, 0-25 cm. lata, 0-3 cm. diametroque; 
flores 5-meri, solitarii vel 2-nati vel rarius 3-nati, meridie expansi, 
1- 2 cm. cliam., pedunculis gracilibus, omnibus medio 2-bracteatis, laterali- 
bus 0-5 cm. longis, mediano ad 0-8 cm. longo; calyx subturbinatus, basi 
fere truncatus, circa 0-25 cm. diam., tubo 0-35 cm. longo, apice subcon- 
stricto, segmentis inter se aequilongis, lanceolatis vel ovato-lanceolatis, 
acutis, 0-4 cm. longis, interioribus late, exterioribus anguste, membranaceo- 
marginatis; petala pluri-seriata roseo-purpurea, basin versus pallidiora, 
marginibus saturatis, inter se subaequilonga, 0-5 cm. longa, 0-15 cm. 
lata; stamina non bene visa, ? conferta, filamentis superne purpureo- 
notatis, parum infra medium barbatis, antheris pallidis; discus prominens 
