(Jaralluma.'] Lxxxv. ASCLEPiADEiE (FmowN). 489 



22. C. subulata, Decne. (an Arabian sppci^s), is quoted by K. 

 Schumann in Ann. Istit. Bot. Roma, vii. 48, as liaving been collected in 

 Somaliland, at Milmil, on hill sides near the river, Riva ;^, and in 

 Ogaden district, Riva 44, but I doubt the correctness of the identifi- 

 cation. 



50. TRICHOCAUIiON, N. E. Br. in Journ. Linn. Soc. xvii. 1G4. 



Calyx 5-partite. Corolla rotate or with a very short tube, 5-lobed 

 to half-way down ; lobes valvate in bud. Corona double, arising from 

 the staminal-column ; outer corona of 5 deeply bifid or bipartite lobes, 

 with subulate divergent-arcuate segments, or somewhat cup-shajxid, 

 with 5 short emarginate or shortly bifid lobes; inner coronal-lobes 

 linear, incumbent on the backs of the anthers, with or without a dorsal 

 tooth-like process at their base, which is adnate to the outer corona. 

 Staminal-column arising from the bottom of the corolla, short ; anthers 

 suberect, linear-oblong, not appendaged. Pollen-masses ascending, 

 solitary in each anther-cell, pellucid along the inner margin, attached 

 in pairs to the pollen-carriers by very short caudicles. Style not 

 exceeding the anthers, truncate at the apex. — Succulent" perennials of 

 dwarf habit. Stems simple or branched at the base, leafless, thick, 

 fleshy, many-angled ; angles formed of crowded tubercles, which are 

 terminated by a spine or rarely very blunt and pointless. Flowers 

 rather small, arising from the angles between the tubercles towards the 

 summits of the stems, subsoUtary, pedicellate. 



Species 6, four of them natives of South Afi'ica. 



Pedicels 1 lin. long ; corolla-lobes deltoid-ovate • l. T. officinale. 

 Pedicels 2-2^ liii. long; corolla-lobes lanceolate or 



ovate-lanceolate . . . . . . 2. T. pedicellatum. 



1. T. officinale, X. E. Br. in Keio Bulletin, 1^05, 2lU. Stems 

 thick and fleshy, probably about Ij in. in diam., with many tuberculate 

 angles ; tubercles terminated by a subulate spine. Flowers arising 

 from the grooves between the angles, subsolitary, or perhaps one flower 

 following another ; pedicels 1 lin. long, glabrous. Sepals about \\ lin. 

 long, lanceolate, acuminate, glabrous. Corolla rotate-campanulate, 

 about 5 lin. in diam., flat, without a tube ; lobes 2-2J lin. long, 2 lin. 

 broad, deltoid-ovate, rather abruptly acuminate into a fine point, more 

 or less spreading, dark purple-brown, glabrous outside, minutely papil- 

 late within, many (all ?) of the papillae terminated by a minute haii-. 

 Outer coronal-lobes about h Hn. long and J lin. broad, arising close to 

 the base of the staminal-column, forming small emarginate jx)uches 

 alternating with the anthers, glabrous ; inner coronal-lobes linejir- 

 oblong, obtuse, shorter than the anthers on which they are incumbent, 

 dorsally adnate to the outer corona, glabrous. 



IVEozamI). I>lst. Bechuanaland : without i)recise locality ! 



I include this among the Tropical African species, akhouj^h it is uncertain if it 

 comes from the tropical or extratropical jiai-t of Bochuanahmd. All I know 



