THE PLANT ECOLOGY OF THE COAST BELT OF NATAL. 407 



The Amaryllidacea; include Hypoxis filiformis, H 

 rig'idnla (552), H. ai-gentea var. sericea, H. acumi- 

 nata, H. gerrardi, H. junodii, H. meuibranacea, H. 

 oligotricha, H. woodii, Apodoliriou ettaj, Cyrtan- 

 tlius angustifolius (5), C. sanguineus (041), 

 Hasmantlius natalensis (58), Bupliane disticlia (595). 



The Iridacese: Mo rasa spathacea, M. tricuspis, 

 Aristea anceps (558), A. torulosa, A. schizolfena, A. 

 eckloni, Hesperantha baui-ii, H. lac tea, Ixia t^ichor- 

 hiza,Lapeyl•ouseacruenta (54) ,Watsoniadensiflora, 

 Tri ton ia laxi folia, T. lineata, Gla diolus inandensis. 



The Orchidaceas : Eulophia gemula, E. pur- 

 pur as c ens, E. hians, E. dregeana, E. inasqualis, 

 Lissochilus asqualis, L. streptopetalus, L. arena- 

 rius, Bracliycorythis ovata, B. pubescens, Habe- 

 naria foliosa, H. dregeana, H. porrecta, Bonatea 

 boltoni, Satyriuni m aero phy Hum, Disa extinctoria, 

 Disperis cardiophora. 



The Asclepiadacefe are represented on the coast belt bv 

 a large number of climbing species in the scrub. In the 

 grassveld the species which occur are similar to the bulbous 

 monocotyledons in being geophytes often with very large 

 underground tubers. The following are common : Raphion- 

 acme elata, R. galpini, R. divaricata, Xysmalobium 

 involucratum, X.orbiculare,Periglossum mackenii, 

 Schizoglossum virens, S. robustum, S. tubulosum 

 (505), S. carinatum, Pachycarpus scaber (553), Ascle- 

 pias prsemorsa, A. peltigera (559), A. flexuosa, A. 

 brevicuspis, A. albens, Sphajrocodon obtusifolium, 

 Sisyranthes imberbis, Brachystelma sandersoni 

 (511), Woodia verruculosa (554). 



The Acanthaceas are also very abundant on the coast 

 belt, but their favourite habitat is the moist margin of the 

 scrub. A few occur in or spread through the grassveld, 

 e. g. Thunbergia atriplicif olia (59-4-), Ruellia ovata, 

 Dyschoriste depressa, Ch^tacanthus burchellii 



