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SPECIMEN DESCRIPTION

This is a detailed botanical description of plant specimen(s) for this species measured and photographed.

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Photo# 10683 Specimen# R2847
Costus erythrophyllus Specimen from Jesse Durko Nursery


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Photo# 10684 Specimen# R2847
Costus erythrophyllus Specimen from Jesse Durko Nursery


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Photo# 10685 Specimen# R2847
Costus erythrophyllus


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Photo# 10686 Specimen# R2847
Costus erythrophyllus


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Photo# 10687 Specimen# R2847
Costus erythrophyllus


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Photo# 10688 Specimen# R2847
Costus erythrophyllus bracts, bracteoles, calyx


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Photo# 10689 Specimen# R2847
Costus erythrophyllus bracts, not green appendages


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Photo# 10690 Specimen# R2847
Costus erythrophyllus bracts, note green appendages


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Photo# 10691 Specimen# R2847
Costus erythrophyllus bracteole and calyx


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Photo# 10692 Specimen# R2847
Costus erythrophyllus bracteole and calyx


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Photo# 10693 Specimen# R2847
Costus erythrophyllus bracteoles


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Photo# 10694 Specimen# R2847
Costus erythrophyllus bracteoles


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Photo# 10695 Specimen# R2847
Costus erythrophyllus calyx


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Photo# 10696 Specimen# R2847
Costus erythrophyllus flower


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Photo# 10697 Specimen# R2847
Costus erythrophyllus flower


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Photo# 10698 Specimen# R2847
Costus erythrophyllus flower


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Photo# 10699 Specimen# R2847
Costus erythrophyllus corolla lobes


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Photo# 10700 Specimen# R2847
Costus erythrophyllus corolla lobes


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Photo# 10701 Specimen# R2847
Costus erythrophyllus labellum and stamen


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Photo# 10702 Specimen# R2847
Costus erythrophyllus labellum


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Photo# 10703 Specimen# R2847
Costus erythrophyllus stamen


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Photo# 10704 Specimen# R2847
Costus erythrophyllus stamen


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Photo# 10705 Specimen# R2847
Costus erythrophyllus stamen


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Photo# 10706 Specimen# R2847
Costus erythrophyllus style


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Photo# 10707 Specimen# R2847
Costus erythrophyllus labellum


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Photo# 10708 Specimen# R2847
Costus erythrophyllus labellum


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Photo# 10709 Specimen# R2847
Costus erythrophyllus labellum


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Photo# 10710 Specimen# R2847
Costus erythrophyllus labellum


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Photo# 10711 Specimen# R2847
Costus erythrophyllus ligule


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Photo# 10712 Specimen# R2847
Costus erythrophyllus leaves


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Photo# 10713 Specimen# R2847
Costus erythrophyllus


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Photo# 10714 Specimen# R2847
Costus erythrophyllus


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Photo# 10715 Specimen# R2847
Costus erythrophyllus


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Photo# 10716 Specimen# R2847
Costus erythrophyllus


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Photo# 10717 Specimen# R2847
Costus erythrophyllus stamens


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Photo# 10718 Specimen# R2847
Costus erythrophyllus stamens


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Photo# 10719 Specimen# R2847
Costus erythrophyllus


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Photo# 12352 Specimen# R2847
Costus erythrophyllus stigma


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Photo# 12353 Specimen# R2847
Costus erythrophyllus stigma


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Photo# 12354 Specimen# R2847
Costus erythrophyllus stigma



ACCESSION #:
R2847

IDENTIFIED AS:
Costus erythrophyllus

LOCATION:
Le Jardin Ombragé

SOURCE:
Plant in horticulture, origin unknown.

DETERMINATION:
By Dave Skinner, characters match the description by Maas. Keys down to C. erythrophyllus or C. varzearum but determined by (usually) plicate leaves, longer bract appendages and longer calyx.

GENERAL:
This specimen is the typical plant sold in the horticultural trade in the USA , a medium sized Costus with distinctive dark green, almost black foliage on the upper sides and dark purple underneath.

RHIZOME :


SHEATH:
Dark purple, glabrous, 15-18 mm in diameter.

LIGULE:
Purple, glabrous, deeply lobed, 20-22 mm long.

PETIOLE:
Purple, glabrous, difficult to measure but about 10 mm long or more.

LEAVES:
Dark green upper side, dark purple below, glabrous, 22-26 cm long by 10-13 cm wide, apex acuminate with acumin 3-5 mm long.

INFLORESCENCE:
Terminal on a leafy stem or basal on a separate shoot. Ovoid

BRACTS:
Red both sides, coverd by appendages, glabrous, 4 cm long by 3-3.5 cm wide.

APPENDAGE:
Green with reddish streaks, glabrous, 2.5 cm long by 2 cm wide.

BRACTEOLE:
Red, with whitish callous 8 mm long, glabrous, 3 cm long by .8 cm wide.

CALYX:
Red with white tips, glabrous, 2 cm long by 1 cm wide.

COROLLA:
Creamy white, glabrous, translucent, 5.5 - 6 cm long by 1.8 - 2.2 cm wide.

LABELLUM:
Creamy white with reddish veins and 2 yellow lines in throat, glabrous, 7 cm long by 5 cm wide

STAMEN:
Creamy white with red tip and 2 sharp lobes, glabrous, 4 cm long by 1.4 cm wide.

STIGMA:


OTHER:


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