Pavonia ecostata (Malvaceae), a new species from Jalisco,Mexico

A new species ofPavonia (P. ecostata) from the Sierra Cacoma is described and illustrated and compared to its closest allies,P. alia andP. pulidoae.     

Seven new species of Pavonia (Malvaceae) from the Horn of Africa

Pavonia friisii , sp. nov., from south-eastern Ethiopia and south-central and southern Somalia, P. nigrescens , sp. nov., from south-central and southern Somalia, P. matteiana , sp. nov., from south-central Somalia, P. longipilosa , sp. nov., from eastern Ethiopia, P. rotundifolia , sp. nov., from eastern Ethiopia and northern and central Somalia, P. marginata , sp. nov., from central Somalia, and P. paucibracteata , sp. nov., from central Somalia, are described and illustrated.     

Lobelia tripartita (Lobeliaceae), a new species from Ethiopia

Lobelia tripartita , a prostrate species with dissected leaves, is described from the southern slopes of Bale Mts in Ethiopia.     

Drimia exigua (Hyacinthaceae), a new species from Ethiopia

Drímia exigua , a small and slender species, is described from the Guder river valley in Ethiopia.     

Ceiba rubriflora (Malvaceae: Bombacoideae), a new species from Bahia, Brazil

Summary   Ceiba rubriflora Carv.-Sobr. & L. P. Queiroz, a new species of Malvaceae subfamily Bombacoideae from the State of Bahia, Brazil, is described and illustrated. It is considered to be endemic to calcareous outcrops in the valley of the Rio S?o Francisco, in the western region of the state. Notes on distribution, ecology and phenology are given. Relationships with related species are discussed and an addition to the key to species of Ceiba Mill. published by Gibbs & Semir (2003) are provided.     

Cibirhiza spiculata (Apocynaceae), a remarkable new species from eastern Ethiopia

Summary  The new species Cibirhiza spiculata Thulin & Goyder, from Acacia-Commiphora bushland on sand in the Somali National Regional State (Ogaden) of Ethiopia, is described and illustrated. Its conservation status has been assessed. A molecular phylogenetic analysis confirms its placement in the tribe Fockeeae and indicates a position of the new species as sister to C. albersiana. The almost obsolete anther appendages, the outer corona with spreading lobes, as well as the pollinia with apparently single pollen grains, also support its placement in Cibirhiza. However, C. spiculata differs markedly from both previously known species of this genus (C. dhofarensis in Oman and Yemen and C. albersiana in Tanzania and Zambia) by its narrowly linear, subsessile leaves and by the inner corona lobes that are curved inwards over the gynostegium and each ending in a spinulose head.     

A new species of Alcea (Malvaceae) from Iran

Alcea mozaffarianii is described and illustrated as a new species from a mountain area in north-western Iran. The differences to similar taxa are discussed.     

A new species of Hibiscus (Malvaceae) from Somalia

Hibiscus ceratophorus , sp. nov. in H . sect. Furcaria , from coastal and subcoastal dunes in southern Somalia, is described and illustrated.     

Akrosida floribunda (Malvaceae), a new arborescent mallow from the Dominican Republic

A new species,Akrosida floribunda, is described from the Dominican Republic. This arborescent genus is now known from two species, the other beingAkrosida macrophylla, from Brazil. Both have very limited distributions.

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Resumen  Se describe la especie nuevaAkrosida floribunda de la República Dominicana. Este género arborescente actualmente se conoce de dos especies, la otraAkrosida macrophylla de Brasil. Las dos tienen distribuciones que son bien restringidas.

     

Determinants of fruit and seed set in Pavonia dasypetala (Malvaceae)

Summary Measurements of foliage quality, physiological, and phenological condition of sample trees were used as independent variables in multiple correlation analyses to determine their effect on female and male spruce budworm larval dry weights. Female budworm from trees high in foliar concentrations of beta-pinene, myrcene and total nitrogen weighed less than those from trees lacking these characteristics. Male budworm from trees high in foliar concentrations of alpha-pinene, myrcene, terpinolene, citronellyl acetate, and bornyl acetate weighted less than those from trees lacking these characteristics. Additionally, relatively vigorous and productive trees tended to be less susceptible (as evidenced by reduced larval weight) to budworm of either sex.     

Pelargonium wonchiense (Geraniaceae): a new species from Ethiopia

Pelargonium wonchiense is described as new from Ethiopia. It is an annual species with minute flowers, and falls in the section Peristera of which the centre of diversity lies in the south-western Cape Province of South Africa.     

Epidendrumcusiyacoense (Orchidaceae), a new species from Colombia

A new species of Epidendrum, E. cusiyacoense, is described and illustrated based on Colombian material. The novelty belongs to the ‘Garayi subgroup’ and resembles the Ecuadorian endemic E. ilinizae, but is distinguished by the oblong-lanceolate leaf which is over five times longer than wide, 2-flowered inflorescence and entire, papillate lip margins. Epidendrum cusiyacoense is so far exclusively known from Colombia where it grows as an epiphyte in wet páramo, among scrub and Espeletia patches at the altitude of about 3000–3500 m. A key to the identification of species belonging to informal Garayi subgroup is provided.     

Taxonomic characters of the staminal tube and epicalyx in Brazilian Pavonia (Malvaceae)

This study was based on the analysis of staminal tube and epicalyx morphology of species ofPavonia (Malvaceae) from northeastern and southeastern Brazil. The importance of characters in the infrageneric taxonomy is discussed. In general, the variability in staminal tube and epicalyx characters are useful mainly in separating closely related species and a few sections; these characters, however, cannot be used to separate subgenera.     

A new species of Eriocaulon (Eriocaulaceae) from Ethiopia

Eriocaulon crassiusculum sp. nov. is described from the Kefa province in southwestern Ethiopia. Illustrations are provided for habit as well as details of flowers (including pollen) and seeds. The new species is most closely related to E. transvaalicum , a widespread species in southern and eastern Africa.     

A new species of Plantago (Plantaginaceae) from Ethiopia

A new species from southern and Eastern Ethiopia, Plantago annua is described and illustrated.     

Four new species of Sida (Malvaceae) from the Horn of Africa

Sida floccosa , sp. nov., from eastern Ethiopia and north-western Somalia, S. ogadensis , sp. nov., from eastern Ethiopia and central Somalia, 5. calliantha , sp. nov., from coastal dunes in southern Somalia, and S. longipedicellata sp. nov., from coastal dunes and sandy plains in central and south-central Somalia, are described and illustrated.     

A new species of Adenia (Passifloraceae) from Ethiopia

Adenia pulchra sp. nov. from Bale Region, southern Ethiopia, is described and its relationships discussed.     

A new species of Festuca (Gramineae) from Ethiopia

The new fine-leaved species Festuca gilbertiana is described from the Semien mountains in Ethiopia. It is most closely related to F. obturbans and F. macrophylla .     

A new species of Polygala (Polygalaceae) from Ethiopia

Polygala mooneyi from Sidamo Region, southern Ethiopia, is described as new. It is compared to P. transvaalensis var. kagerensis from Rwanda, Uganda and Tanzania.     

Hesperozygis pusilla (Labiatae), a new species from Mexico

Hesperozygis pusilla Irving, a rare and apparently endemic species from Galeana, Nuevo León, is described. It is closely allied toH. ciliolata Epling. BothH. ciliolata andH. pusilla have chromosome numbers of 2n = 36.