﻿NEW ACANTHACE3J FROM TROPICAL AFRICA. 131 



Bracteolffl foliacea, 3-2-S-8 cm. long., oblonga, apiculatae, basi 

 leviter cordata, dorso carinam circa 2-5 cm. long, et 0-3 cm. alt. 

 proferentes, extus hirsutula intus glanduloso-puberula et sub- 

 nitentes. Calyx glanduloso-pubescens, totus 0-5 cm. alt. et diam., 

 dentibus circa 14 anguste triangularibus acutis vel acuminatis. 

 Corolla fere usque 5-0 cm. long, tubus superne ampliatus, paullo 

 supra basin leviter coartatus, basi 0-35 cm. faucibus circa 1-0 cm. 

 lat. ; limbi lobi subaquales, oblongi, undulato-truncati, 1-5 cm. 

 long. Stamina ad 0 4 cm. supra basin tubi inserta; filamenta 

 0-5 cm. long., duo attamen paullo longiora, omnia crassiuscula et 

 pubescentia. Anthera oblonga, vix 0-7 cm. long. ; loculi omnes basi 

 crista prominula muniti, anther® staminum longiorum eleganter 

 bi- staminum breviorum unicalcarata ; pollinis grana globosa, 

 circa 70 ft diam. Discus crassiusculus. Ovarium vix 0-2 cm. alt. 

 Stylus 1-8 cm, long., glaber, sub stigmate parum ampliatus. 

 Stigma incrassatum, lobis oblongis truncatis 0-2 cm. lat. praditum. 

 Capsula non suppetebant. 



Cum T. alata Boj. et affinibus componenda, et certe T. Knjthrea 

 Schfth. a cl. Lindau nuperrime divulgata proxima, quacum certe 

 non conspecifica ob folia etbracteolas diversiformes, oalycem et fiores 

 minores, stamina majora, filamenta pubescentia, anthera longiores 

 et obtusae nec acutae, stigmatis lobos subaquales nec inaquales. 



The "crest" above alluded to is made up of a large bunch of 

 long hairs, consisting each of a single row of small cells ; it pro- 

 bably functions as a pollen-collecting apparatus, and the spur, an 

 outgrowth of the anther composed of numerous fusiform relatively 

 thick -walled pitted elements, may in this and similar cases help to 

 impede the movements of visiting insects, and so ensure pollination. 

 The characteristic ribbon-like exine is clearly shown by these 

 moistened pollen-grains without the use of any reagent. The 

 country where this plant grows Dr. Gregory notes as "bare gneiss 

 mountains with upland pastures and shambas ; numerous deep 

 valleys." 



Thunbergia (§ Euthunbeegia) Gibsoni, sp. nov. Caule? 

 foliis (ex Gibson) ovatis, floribus majusculis longipedunculatis, 

 peduncuhs hnsuto-pubescentibus, bracteis majusculis ovatis breviter 

 acuminatis basi rotundato-truncatis ferrugineo-hirsuto-pubescenti- 

 bus, calyce 11-dentato, antherarum loculis apice obtusis basi cristatis 

 et calcaratis, corollas faucibus valde ampliatis, stigmatis lobis folia- 

 ceis subfflqualibuB, latissime obovatis, 0-5-0-6 cm. lat. 



Hab. Crescit in montibus Mau, Afr. Trop. Orient., ubi ad 

 8,200 ped. supra mare legit cl. Gibson (v. s. in herb. Mus. Brit.). 



Pedunculi saltern 8-0 cm. long., 0-15 cm. diam. Bractea usque 

 4 0 x 2-0 cm. interdum vero circa 3 0 cm., intus puberuhe et ele- 

 ganter nervosa. Calyx 0-5 cm. long. Corolla tubus 4-0 cm. long. ; 

 limbi lobi 2-0-2-5 cm. lat. ; fauces saltern 1-7 cm. diam. Stamina 

 fere ]-5 cm. long. Anthera 0-6-0-8 cm. long. Discus 0-15 cm. 

 alt. Ovarium 0-3 cm. et stylus vix 2-0 cm. long. 



The habitat of this fine Thunbergia— the botanical first-fruit of 

 Captain LiumM - .-xp, .Utio:: -;- uv. n by Mr. <iiiK,,n : h uvt 

 swampy ground amidst hills." 



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