RUB I ACE M. SaS 



feeble and creeping herbaceous species of tropical Asia and Oceania, 

 generically named Dentella,^ the flowers are ordinarily solitary in the 

 dichotomy of the branches or in the axil of the leaves, sessile or 

 pedicellate, and the hispid fruit is indehiscent. 



Notwithstanding differences, sometimes considerable, of habit and 

 foliage in Hedyotis,^ in this respect resembling Speimacoce, we can, 

 following the example of many authors, make them only a section of 

 Oldenlandia, in which the stems are herbaceous or often shrubby, or 

 volubUe, with rather broad leaves,' stipules of very variable form, 

 corollas short or more or less tubular, and a fruit indehiscent or 

 dehiscent, frequently coriaceous or crustaceous. Certain American 

 species of Hedyotis have been distinguished generically under the 

 name of Mallostoma ;* they are erect or creeping shrubs with coriaceous 

 imbricate or cricoid leaves, coriaceous capsules, usually septicidal. 

 Others, natives of warm Africa, named PeiUodon,^ have 4, 5-merous 

 flowers, a membranous loculicidal capsule, an herbaceous stem and soft 

 leaves with deflexed fructiferous pedicels. In HeJcistocarpa,^ also an 

 Oldenlandia of western tropical Africa, herbaceous, annual and slender, 

 the pentamerous flowers are sessile on the axis of a cyme which 

 becomes uniparous by abortion ; the corolla is slightly reduplicate ; 

 the style has two subspathulate and recurved branches, and the 

 Capsule, septicidal, is elongate and compressed. Oldenlandia tuherosa, 

 from the Antilles, has also become the type of a separate genus under 

 the name of Lucya ;'' it is a humble herb with root more or less 

 enlarged, corolla rotate, and fruit loculicidal in the upper part, 

 projecting more or less beyond the orifice of the receptacular cup. 



' FoBST. Char. Gen. 25, 1. 13 (1776). — J. Gen. Korth. N'ed. Kruidk. Jrch. ii. 157. — Metabolos 



(1789) 200; Mem. Mus. vi. 385.— Lamk. III. t. 'R-L.Bijdr.Q^d.—Pentodon'H.ociiST.Flm-a (1844), 



118.— Rich. Hub. 190.— DO. Frodr. iv. 418.— 552. 



Endl. Gen. n. 3238.-^B. H. Gen. ii. 54, n. 74. — ' In form and nervation, Tariable according 



Hook. Ft. Ind. iii. 42. — lAppaya Endl. A' alct. to district, they sometimes even recall those of 



13, t. 13. — BertueMa Dennst. Sort. Malab. ix. the Monocotyledons. 



39 (ex Endl.). ■• Karst. Fl. Culomb. ii. 9, t. 105.— B. H. Gen. 



s L. Gen. n. 118. — Rich. Rub. 186.-r-DC. ii. 60, n. S7.—Freicotis DO. Prodr. iv. 431 (sect. 



Prodr. iv. 419. — Endl. Gen. n. 3240. — B. H. Anotidis). — PseudorhachicallisK.A'RST. loc.cU. 10. 



Gen. ii. 66, 1228, n. 81.— A. GtEAT, Free. Amer. ' Hoohst. Flora (1844), 552.-rB. H. Gen. ii. 



Acad. iv. 313. — Ch. et Schlchtl, Zinncea, iv. 58, n. &i.—Pentotis Tour, et Gr. Fl. N.-Amer. 



153. — Leptopetalum Hook, et Arn. Beech. Voy. ii. 42 (sect. Sedyotidia). 



Bot. 295, t. 61.— Hook. Fl. Ind. iii. i^.—Sclero- « Hook. f. leon. t. 1151 ; Gen. ii 62, n. 92. 



mitrion Wight and Arn. Prodr. 412. — Agathi- '• DC. Prodr. iv. 434. — Endl. Gen. 550, 1. — ■ 



santhemiimKuPet.Moss.Bot.iOi.—Peltospennum B. H. Gen. ii. 61, n. 90.—Punalia Spueng. 5^s<. 



Benth. Niger, 400. — Dictyospora Reinw. ex Vrg. i. 366. 



