Description of four new species of Monodora and Isolona (Annonaceae) from Tanzania and an overview of Tanzanian Annonaceae diversity Couvreur, Thomas L. P. Gereau, Roy E. Wieringa, Jan J. Richardson, James E. Adansonia 2006 3 28 2 243 266 446YW Couvreur Couvreur 2006 [730,1064,597,623] Magnoliopsida Annonaceae Monodora Plantae Magnoliales 5 248 Tracheophyta species globiflora sp. nov.  ( Fig. 2)  Verdcourt,  Flora of Tropical East Africa: 123 (1971)as  Monodorasp. B.  Haec species inter congeneros quoad flores solitarios, petala externa margine undulata etiam interna unguiculata supra receptaculum omnino conniventia adMonodoram brevipedem Benth. maxime accedit, sed ab ea foliis venatione tertiaria percurrente, pedicello pubescente atque petalis internis utrinque pubescentibus distinguitur.   TYPUS. —  Tanzania. Iringa Region, Kilolo Distr., Udzungwa Mountains, 07°42’S, 36°37’E,  13.X.2002, fl., Luke 9136(holo-, MO!; iso-, EA!, K!, NHT).  OTHER MATERIAL EXAMINED. —  Tanzania. Iringa Region, Kilolo Distr., Uhimbila, 7°31’S, 36°10’E, alt.  1850 m,  XI.1953, fl., Carmichael 274(EA!, K!). —  Udzungwa MountainsNP, Mt. Luhomero Pt131, 7°47’S, 36°33’E, alt.  1440 m,  27.IX.2000, fl., Luke 6724(EA!, K!, NHT). — Udzungwa Mountains, Pt 362, 7°40’S, 36°39’E, alt.  1800 m,  15.X.2002, fl., Luke 9178(EA!, K!, MO!, NHT). — Ndundulu, Udzungwa Mountains, West of KilomberoF. R., 7°46’46”S, 36°28’26”E, alt.  1700 m,  10.II.2000, fr.,  Price WK354(MO!). — Image Mt., 7°30’S, 36°10’E, alt.  2000 m,  XI.1959, fl., Procter 1541(EA!, K!). HABITAT. — Sparse high montane forest, at 1700-2000 maltitude, on well drained brown sandy loams with extensive areas of rock faces.  DISTRIBUTION. — Only known from montane forests of the Udzungwa Mountains, Tanzania( Fig. 5).  DESCRIPTION Tree c. 4 mtall; bark grey with white lenticels; young branchlets drying black, densely pubescent. Petiole c. 8 mmlong, pubescent, with a groove above; leaf blade elliptic, sometimes obovate, papyraceous, 12- 13 × 4-5 cm, acute to cuspidate at apex, cuneate to rounded at base, pubescent below, glabrous above; younger leaves more densely pubescent than older ones; midrib densely pubescent on both sides with pubescence disappearing in older leaves, prominent below, raised above; secondary veins 14 to 16 pairs, strongly curved and regularly parallel,anastomosing 3- 4 mmfrom the margin; tertiary nerves percurrent.  FIG. 1. —  Monodora carolinaeCouvreur: A, flowering branch; B, leaf; C, mature flower; D, detail of inner petal (inside view); E, androecium and gynoecium (stigma missing); F, stamen. Drawing by Wil Wessel-Brand. Scale bars: A-C, 1 cm; D-F, 1 mm. Flowers solitary and axillary, pendulous, flowering on previous year’s branches; pedicel slender, in flower 40-45 mmlong, pubescent; in fruit woody, black with white lenticels c. 40 mmlong, 3-4 mmin diam., glabrous; bract inserted in lower half of pedicel, rounded, cup-shaped, c.8 × c. 7 mm, auriculate-clasping, green, the margins non-undulate and very densely white-ciliate. Sepals broadly elliptic, 8-10 mmlong, 6-8 mmwide, rounded at apex, the margins entire and densely white-ciliate; outer petals slightly reflexed and curved inwards at apex when fully opened, elliptic, 28-32 × 18-23 mm, cuneate apex, creamy yellow streaked with red slashes and spots or sometimes light green streaked with darkish green,undulate, glabrous; inner petals clawed, same colour as outer petals, the claw widening gradually into lamina, 3-5 × 2-4 mmat base, the lamina broadly transversely elliptic, 7-8 × 10-12mm, slightly acuminate at apex, pubescent with trichomes c. 1 mmlong in center, manicate along the margins, the whole lamina connivent over receptacle like a globe; stamens c. 0.8 mmlong, glabrous, the connective appendages c. 0.1 mmlong;ovary c. 1 mmlong with a glabrous stigma. Fruit irregularly globose, 4-5 cmin diam., glabrous, irregularly ribbed, the pericarp thin, white, green-reticulate; seeds c. 15 mmlong, c. 7 mmwide, oval, embedded in white pulp. Pollen: tetrad acalymmate, tetragonal sub-square shaped monads coherent.Size at longest axis: tetrad, 63-76 µm; monad, 39-45 µm. Tectum structure: reticulate-perforate ( Fig. 7C, D). VERNACULAR NAME Mkimi (Kihehe). NOTES The species has been photographed by Mr Quentin Luke. The specimen Luke 9178has green to yellow flowers with white streaks, while Luke 9136has yellow petals with red streaks. This indicates some variation in colour that needs further investigation in the field. 2002-10-13 Tanzania -7.7 Udzungwa Mountains 1303 36.616665 Kilolo Distr. 5 248 1 Iringa holotype 1953-11 2002-10-15 1953-11 Udzungwa Mountains NP & Kilombero F. R. & Price WK Tanzania Kilolo Distr. 1850 -7.5 Udzungwa Mountains 1303 36.166668 Uhimbila 5 248 1 Iringa