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Botanical Description page for GingersRus plant database number " 7365 ".

You can select the botanical description of a different plant from this list: Click arrow to see list, then click GO Chamaecostus congestiflorus Chamaecostus curcumoides Chamaecostus cuspidatus Chamaecostus fragilis Chamaecostus fusiformis Chamaecostus lanceolatus Chamaecostus subsessilis Cheilocostus globosus Cheilocostus lacerus Cheilocostus speciosus Cheilocostus sopuensis Costus "El Whiskey" Costus sp. from Cabo Matapalo Costus acreanus Costus afer Costus albus Costus allenii Costus amazonicus Costus arabicus Costus asplundii Costus asteranthus Costus barbatus Costus beckii Costus bracteatus Costus chartaceus Costus claviger Costus claviger aff Costus comosus var. bakeri Costus comosus Costus cordatus Costus cupreifolius Costus curvibracteatus Costus deistelii Costus dewevrei Costus dirzoi Costus dubius Costus erythrocoryne Costus erythrophyllus Costus erythrothyrsus Costus fissiligulatus Costus foliaceus Costus gabonensis Costus geothyrsus Costus glaucus Costus guanaiensis Costus guanaiensis var. macrostrobilacius Costus guanaiensis var. tarmicus Costus juruanus Costus laevis Costus lasius Costus lateriflorus Costus letestui Costus leucanthus Costus ligularis Costus lima Costus longebracteolatus Costus lucanusianus var. major Costus lucanusianus Costus Maas species A Costus Maas species B Costus maboumiensis Costus macranthus Costus maculatus Costus malortieanus Costus montanus Costus nitidus Costus nudicaulis Costus oblongus Costus osae Costus phaeotrichus Costus pictus Costus plicatus Costus plowmanii Costus potierae Costus productus Costus pulverulentus Costus quasi-appendiculatus Costus ricus Costus sarmentosus Costus scabe Costus spectabilis Costus spicatus Costus spiralis Costus sprucei Costus stenophyllus Costus subbiflorus Costus tappenbeckianus Costus tonkinensis Costus vargasii Costus varzearum Costus villosissimus Costus vinosus Costus violaceus Costus viridis Costus wilsonii Costus woodsonii Costus zamoranus Costus zingiberoides Paracostus englerianus Paracostus paradoxus

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Costus araneosus

Costus araneosus Gagnep.

BOTANICAL NAME: Costus araneosus
SUBGENUS:Metacostus
GROUP:
SECTION:
PRIMARY SOURCE USED FOR DESCRIPTION:Schumann - Das Pflanzenreich, 1904
SECONDARY SOURCES:
LAST UPDATED:
NOTES AND DISTINGUISHING CHARACTERISTICS:Schumann only lists two species in the subgenus metacostus - this one and C. lateriflorus. C. araneosus is distinguished from lateriflorus by longer bracts and undersides of leaves softly tomentose (densely matted hairs). NOTE: flower color of this species not described.

A. Bracteae 1-1.2 cm longae, calyx 1.5 cm metiens, folia subtus, molliter tomentosa . . . . . . . . . . 71. C. araneosus. B. Bracteae 5-6 mm longae, calyx 1.8 cm metiens, folia subtus, glabra . . . . . . . . . .. . . . . . . . . . . . 72. C. lateriflorus.

71. C. araneosus Gagnepain in BuII. Soc. bot. France 4. ser. II:(1902) 95; Bull. Soc. hist. nat. Autun XV. (1902)16, 19 [Hoc loco cl. Gagnepain sphalmate indicavit, hanc speciein jam 1892 publici juris factam esse.]

Planta minus valida, caules graciIes torti 7 mm tantum, diametro. Folia lanceolata attenuato-acuminata basi longe angustata supra glabra subtus molliter tomentosa. 12-20 cm Ionga et 4-6 cm. lata; vagina striata molliter pilosula; ligula 1.5-2 cm longa integra obtusa pilosula margine pilis longissimis flexuosis tenerrimis araneoso-ciliata. Spica lateralis parva 2.5 cm longa et 1.5-.8 cm lata pauciflora; bracteae pro rata parvae. 1- 2 cm tantum longae et latae non foliaceae apice rotundatae; flores in toto 6 cm longi; calyx hos superans 1.5 - 1.6 cm longus tubulosus tridentatus, unilateraliter fissus extus pilosulus, dentes ciliolati; corollae tubus calycem vix superans gracilis, lobi subaequales lanceolati acuti 3.5 cm longi; stamen laneeolatum acutum 4.5 cm longum 9 mm latum, anthera tertia parte ei adnata; ovarium pilosum.

Unteres Congogebiet: Bei Brazzaville (P. de Brazza n. 100, bluhend Ende Septembe rund Anfang Oktober).

Nota. Propter inflorescentiam lateralem hanc speciem in affinitatem C. lateriflori Bak. collocavi. Cl. Gagnepain de constantia hujus characteris non omnino certus fuit et re vera indagationes accuratae loco natali de hac re maxime desiderantur. Cum C. latertfloro Bak. haec species taliter charactetibus essentialibus ceteris congruit, ut certissime cum eo in idem subgenus pertineat.
NATURAL DISTRIBUTION:Congo
HEIGHT:0 to 0 meters

Botanical Description for this Species
For illustrations or explanation of terminology, click on the linked plant part or column header.
Descriptions used for plant identification key are shown in BOLD.

Plant Part	General	Color	Hairs	Texture	Shape	Length	Width
Rhizome						0 to 0 cm	0 to 0 cm
Sheath			softtly pilosulous	striate	twisted	0 to 0 cm	0 to 7 mm
Ligule			margn pilosulous, long ciliate			15 to 20 mm	0 to 0 mm
Petiole						0 to 0 mm	0 to 0 mm
Leaf					lanceolate-attenuate	12 to 20 cm	4 to 6 cm
...upper			glabrous
...under			softly tomentose
...base					narrow at base
...apex					acuminate	0 to 0 mm
Inflorescence	lateral					0 to 2 cm	1 to 1 cm
Bract	proportionally small				round	1.0 to 2.0 cm	1.0 to 2.0 cm
Appendage	NONE					0.0 to 0.0 cm	0.0 to 0.0 cm
Bracteole						0.0 to 0.0 cm	0.0 to 0.0 cm
Flower						0 to 6 cm	0 to 0 cm
Calyx			pilosulous		tubular, tridentate, split one side	1.5 to 1.6 cm	0.0 to 0.0 cm
Corolla						0.0 to 3.5 cm	0.0 to 0.0 cm
Labellum						0.0 to 0.0 cm	0.0 to 0.0 cm
Stamen						0.0 to 4.5 cm	0.0 to 0.9 cm

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