RIOHAHD1A 



THE BULB BOOK 



HIGIDELLA 



africana, this species frequently 

 throws double spathes, as shown in 

 the sketch. There is a stocky variety 

 known as Rossi, and another called 

 "Mrs Roosevelt" having pale lemon- 

 yellow spathes. 



R. hastata. This species grows 

 about 2 ft. high, and has oval 

 hastate pointed leaves, green and 

 unspotted. The spathes are of a 

 greenish-yellow and of good size. 

 (Eot. Mag.t. 5176.) 



R. intermedia. A strong-growing, 

 compact, and free-flowering plant 

 with broadly heart-shaped leaves dot- 

 ted with white, and stalks marbled 

 white and rose. Spathe very dark 

 yellow, with small black blotch at 

 base. 



R. Lutwychei. A species closely 

 related to R. hastata and R. Pent- 

 landi, having triangular, sagittate, 

 pointed, green unspotted leaves with 

 heavily spotted stalks. The spathes 

 are bright yellow with a large deep 

 purple blotch at the base. Now 

 considered to be identical with 

 R. hastata. (Rev. ffort. 1896, t. 

 60; Gard. Chron. 1893, xiii. 568.) 



R. macrocarpa. This is recognised 

 by its very large fruits and medium- 

 sized spathes, pale green outside, 

 white within. 



R. melanoleuca. This species 

 grows about 2 ft. high, and has 

 oblong or oval sagittate-hastate leaves 

 covered with white translucent 

 blotches. The spathes are yellow, 

 enclosing a white spadix and having 

 a purple blotch at the base. (Eot. 

 Mag. t. 5765.) 



R. Pentlandi. A fine species in 

 the way of R. Elliottiana, but with 

 larger, thicker, and unspotted green 

 leaves, and large bright golden- 

 yellow flowers (Bot. Mag. t. 7397 ; 

 Garden, 1895, ii. 1033). 



R. Rehmanni. A little-known but 

 distinct species, having lance-shaped 



leaves, and rather small tubular 

 spathes tinted with dull rose-purple 

 (Bot. Mag. t. 7436). The variety 

 speciosa is dwarfer and stronger- 

 growing than the type, and the 

 spathe is bright red ; in the variety 

 coccinea the spathe is scarlet 



Fia. 804. Richardia Rehmanni. (J.) 



(Garten/I. 1906, t. 1552). This species 

 crossed with R. melanoleuca has 

 produced a hybrid known as R. 

 cantabrigiensis. 



R. Sprengeri. This species from 

 the Transvaal is remarkable in having 

 leaves truncated (not hastate or 

 cordate) at the base, and the yellow 

 spathes are broader than in other 

 species (Gard. Chron. 1902, xxxii. 

 350). 



RIGIDBLLA (rigidm, stiff; in 

 reference to the flower-stalk). Nat. 

 Ord. Irideee. A genus containing 

 only a few species of half-hardy 

 bulbous plants, closely related to the 



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