9^ ON SOUTH-AMEEICAN APOCTNACE^. 



5. Thyrsanthus Gardneri, A. DC. /. c. p. 387 : Forsteronia Gardneri, Miill. I. c. p. 100. In Brasilia : 



V. s. in herb, meo prov. Goyaz (Gardn. 3891). 

 Apparently an erect shrub, having straight terete subpuberulous branches marked 

 with small white lenticels, axils IJ in. apart ; leaves spreading, oblong, rounded and 

 subcordate at the base, gradually acute and often mucronulate at the apex, very flat, 

 rigidly chartaceous, opake green above, with about 8 pairs of semi-immersed nerves, 

 sulcate on the fine reticulated veins, with 2 smaU glands at the base of the midrib, 

 glaucous pale beneath, opake, nerves yellow, prominulent, 3-4 in. long, l-lj in. broad, 

 on pubescent channelled petioles 1 line long ; panicle terminal, laxly thyrsoid, 3^ in. 

 long, rufously pubescent, branching from the base, branchlets 2^ in. long, diminishing 

 upwards, again branched, ultimate branchlets 4-6 lines long, bearing several closely 

 approximated flowers on puberulous bracteolated pedicels | line long; sepals acute, 

 puberulous, with membranaceous margins, ^ line long, with 8 minute inner basal 

 scales; corolla reddish, glabrous outside; tube ^ line long; segments acute, densely 

 lanate within, dextrorsely convolute; anthers subincluded, glabrous, smallish, with 

 2 parallel obtuse basal prongs ; disk of 5 ovate fleshy lobes, shorter than the 2 pilose 

 ovaries. 



6. Thyrsaxthus adenobasis, nob. : Forsteronia adenobasis, Miill, Linn. xxx. p. 412. In Guiana : fl. 



Pomeroon (Rob. Schomb. 707) : non vidi. 

 A species near the preceding, with opposite, sometimes ternate leaves, oval or elliptic, 

 slightly cordate at the base, submembranaceous, glabrous above, with 6-7 pairs of 

 oblique nerves and reticulated veins, showing at the base of the midrib 2 large reddish 

 granular glands, as in the typical species, densely and shortly tomentous beneath, 

 4-4| in. long, 2J-3 in. broad ; JDanicle rigidly pyramidal, deep red, densely puberulous, 

 oppositely branched and again divided, bearing numerous small flowers. 



7. Thyrsanthus macrophyllus, nob. : Forsteronia macrophylla, Miill. Linn. xxx. 411 : TabemtEmontana 



macrophylla, Poir. Diet. Suppl. v. 276 ; A. DC. I. c. p. 374. In Cayenne : non vidi. 



A species little known, which must not be confounded with the Taberncemontana 

 nmcrophylla of Miill., described by me under Phrissocarpus rigidus. It has cinereo- 

 pruinose branches ; leaves broadly ovate, obtuse, with a short acute acumen, submem- 

 branaceous, fuscous green above, glabrous, cinereo-fulvous and pruinose beneath, 

 5^6| in. long, 3f— 4 in. broad, on petioles j-l line long ; panicle terminal, pyramidally 

 corymbiform, 4 in. long, yellowish puberulous, lower branches elongated, all again 

 branched, and bearing several very small flowers on pedicels 1^-2 lines long; calyx 

 1 line long ; corolla 2^ lines long, like those in T. popuUfolia and T. parviflora. 



8. Thyrsanthus diospyrifolius, nob. : Forsteronia diospyrifolia, Miill. Linn. xxx. 415. In Guiana Brit. 



(Rob. Schomburgk 834) : non vidi. 



A species near the first described, with glabrous branches thickened at the axils, 

 verrucously lenticellate ; leaves oblong-eUiptic, subobtuse at the base, shortly and 



