(Last Modified On 1/28/2013)
|
|
(Last Modified On 1/28/2013)
|
Species
|
PFAFFIA GRANDIFLORA (Hook.) R. E. Fr.
|
PlaceOfPublication
|
Ark. Bot. 1612:10. 1921.
|
Synonym
|
Iresine grandiflora Hook. in Icon. PI. 2: tab. 102. 1837. Gomphrena panicuatca var. y hookleriana Seub. in Mart. F1. Bras. 51:192. 1875. Hebanthe decipiens Hook. f. in Benth. & Hook. f. Gen. PI. 3:41 . 1880. Hebanthe hookeriana Hems. Biol. Cent. Am. 3:19. 1882. Gossypianthibs hookerianus 0. Ktze. Rev. Gen. 543. 1891. Gossypianthus decipiens 0. Ktze. loc. cit. 543. 1891. Pfaffia bookeriana (Hems.) Greenmr. in Field Mus. Bot. 2:3 3 0. 1912. Pfaflia grandiflora (Hook.) R. E. Fr. in Stiitzer, in Rep. Spec. Nov. Beih. 8 8:9. 1935. Pfafiia grandiflora var. hookeriana Stiitzer, loc. cit. 1 0. 1935.
|
Description
|
Suffrutescent, usually pubescent, clambering perennials to about 3 m. long. Leaves rufous-strigose, at least below, lanceolate to broadly ovate, apically acute to attenuate, basally rounded to acute, 2-10 cm. long, 1-5 cm. broad; petioles 2-1 0 mm. long. Inflorescence a terminal panicle of pedunculate, opposite or verticillate, simple or compound spikes, the lower often subtended by reduced leaves, the rhachises and peduncles densely rufous-pubescent. Flowers perfect, often infertile, sessile; bracts and bracteoles subequal, broadly ovate, rufous- tomentose, 1-2 mm. long, 1-2 mm. broad; sepals 5, subequal, elliptic, the ribs obscured by the pubescence, 2-3.5 mm. long, 1-2 mm. broad; stamens 5, 1.5-2.5 mm. long, united below into an exappendiculate tube about 0.5 mm. long; ovary at anthesis ovoid; stigma 1, bilabiate, subsessile. Fruit an included indehiscent utricle to 2 mm. long; seeds cochleate-orbiculate, reddish brown, about 1.5 mm. long, on a funicle up to 1 mm. long.
|
Specimen
|
DARIEN: Cina and vicinity, 2000-6500 ft., Williams S28.
|
Distribution
|
This species ranges from Mexico to British Guiana and Peru.
|
Note
|
Standley (in Contr. U. S. Nat. Herb. 27:174. 1928) reports this species, as P. hookeriana (Hems.) Greenm., to have been collected at Gatuncillo. His identification is questionable however since he keys the species as having lobed stamen tubes. The reliability of pseudostaminodial characters is thrown open to suspicion by examina- tion of Williams 828 from Darien. In this specimen, possibly a hybrid between P. grandiflora and P. paniculata, although leaning strongly toward the former in other characters, the stamen tube in a single flower has pseudostaminodia between some filaments and none between others. Both Fries (in Ark. Bot. 1612:10. 1921) and Standley (in Field Mus. Bot. 13:490. 1.936) have erroneously associated the name P. grandiflora (Hook.) R. E. Fr. with P. brachiata Chod. (incl. P. bangii R. E. Fr.), a species differing by its striking dendroid pubescence.
|
Tag
|
|
Project Name
|
Tag
|
|
|