Rami primarii ad 12 cm. longi, ad 5 nun. diam., interdum radicantes, inferne vaginati, superne reliquis induratis onusti; ramuli saepe 6-foliati sine 1-2 gemmis axillaribus bene evolutis 2-1-f'oIiatis; duo folia paris demum subaequilonga, ad 1.9 cm. longa sine vagina 5 mm., fere erecta, supra visa subspathulata, lat. visa superne leviter ampliata carinataque, dentibus utrinque saepius 3, conspicuis apiculatis, glauca, aspera ob puncta crebra, orbicularia vel demum subconica, apice saepe alba, in senectis margaritacea, ad 9 mm. lata, ad 6 mm. diam.; flores sessiles nocturni (merinocte tote expansi) odorati; receptaculum 2-carinatum, utrinque convexum, apice leviter constrictum, 5 mm. longum cum tubo fere 2 mm., ad 5 mm. diam.; sepala 5, apice leviter cucullata, exteriora carinata, superne leviter compressa, ad 1.25 mm. diam., 7-8 mm. longa, basi 2-3.5 mm. lata; petala 4-seriata, acuminata vel acuta vel subobtusa, laete lutea, 0.6-1 cm. longa sine parte tubo receptaculi adnata, sepala bene superantia, vix ad 0.5 mm. lata; stamina ca. 6-seriata, ad 6 mm. longa; fossae magnae profundae, nectare copioso; ovarium supra, medio, per 1.5 mm. conice elevatum; stigmata 5, subclavata 1.5 mm. longa; capsula 8 mm. diam., medio per 2.5 mm. elevata ibique valvis acutis radiantibus vel recurvatis.
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Perennial, caespitose, dwarf shrublet, up to 0.04 m high, roots fibrous, old stems rooting. Leaves trigonous, margins and keel with teeth, epidermis dotted, rough with sharp elevations, apex keeled. Flowers solitary, yellow. Capsules 5-locular, covering membranes a ledge, closing bodies absent, valve wings broad.
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