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Datasheet for Costus varzearum

Plant Datasheet for Costus varzearum

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Costus varzearum at Fairchild Tropical Gardens, Miami,  - Click to see full sized image
Photo# 12082 Accession# R0
Costus varzearum at Fairchild Tropical Gardens, Miami,


Costus varzearum at Lyon Arboretum, Oahu, Hawaii  - Click to see full sized image
Photo# 12841 Accession# R0
Costus varzearum at Lyon Arboretum, Oahu, Hawaii


Costus varzearum at Lyon Arboretum, Oahu, Hawaii  - Click to see full sized image
Photo# 12842 Accession# R0
Costus varzearum at Lyon Arboretum, Oahu, Hawaii


Costus varzearum  bracteole - Click to see full sized image
Photo# 12054 Accession# R1394
Costus varzearum bracteole


Costus varzearum  bracts - Click to see full sized image
Photo# 12055 Accession# R1394
Costus varzearum bracts


Costus varzearum  bracts - Click to see full sized image
Photo# 12056 Accession# R1394
Costus varzearum bracts


Costus varzearum  bracts sequence - Click to see full sized image
Photo# 12057 Accession# R1394
Costus varzearum bracts sequence


Costus varzearum  bracteole and calyx - Click to see full sized image
Photo# 12058 Accession# R1394
Costus varzearum bracteole and calyx


Costus varzearum  calyx - Click to see full sized image
Photo# 12059 Accession# R1394
Costus varzearum calyx


Costus varzearum  corolla lobes - Click to see full sized image
Photo# 12060 Accession# R1394
Costus varzearum corolla lobes


Costus varzearum  corolla lobes - Click to see full sized image
Photo# 12061 Accession# R1394
Costus varzearum corolla lobes


Costus varzearum  labellum - Click to see full sized image
Photo# 12062 Accession# R1394
Costus varzearum labellum


Costus varzearum  labellum - Click to see full sized image
Photo# 12063 Accession# R1394
Costus varzearum labellum


Costus varzearum  labellum - Click to see full sized image
Photo# 12064 Accession# R1394
Costus varzearum labellum


Costus varzearum  labellum - Click to see full sized image
Photo# 12065 Accession# R1394
Costus varzearum labellum


Costus varzearum  labellum - Click to see full sized image
Photo# 12066 Accession# R1394
Costus varzearum labellum


Costus varzearum  labellum with stamen - Click to see full sized image
Photo# 12067 Accession# R1394
Costus varzearum labellum with stamen


Costus varzearum  labellum with stamen - Click to see full sized image
Photo# 12068 Accession# R1394
Costus varzearum labellum with stamen


Costus varzearum  leaf abaxial side - Click to see full sized image
Photo# 12069 Accession# R1394
Costus varzearum leaf abaxial side


Costus varzearum  leaf apex - Click to see full sized image
Photo# 12070 Accession# R1394
Costus varzearum leaf apex


Costus varzearum  flower bud shown in bract-bracteole-calyx - Click to see full sized image
Photo# 12071 Accession# R1394
Costus varzearum flower bud shown in bract-bracteole-calyx


Costus varzearum  petiole and ligule - Click to see full sized image
Photo# 12072 Accession# R1394
Costus varzearum petiole and ligule


Costus varzearum  stamen - Click to see full sized image
Photo# 12073 Accession# R1394
Costus varzearum stamen


Costus varzearum  stamen - Click to see full sized image
Photo# 12074 Accession# R1394
Costus varzearum stamen


Costus varzearum  leaf apex - Click to see full sized image
Photo# 12075 Accession# R1394
Costus varzearum leaf apex


Costus varzearum  ligule - Click to see full sized image
Photo# 12076 Accession# R1394
Costus varzearum ligule


Costus varzearum - Click to see full sized image
Photo# 12077 Accession# R1394
Costus varzearum


Costus varzearum - Click to see full sized image
Photo# 12078 Accession# R1394
Costus varzearum


Costus varzearum - Click to see full sized image
Photo# 12079 Accession# R1394
Costus varzearum


Costus varzearum - Click to see full sized image
Photo# 12080 Accession# R1394
Costus varzearum


Costus varzearum - Click to see full sized image
Photo# 12081 Accession# R1394
Costus varzearum


Costus varzearum - Click to see full sized image
Photo# 17274 Accession# R2994
Costus varzearum


Costus varzearum - Click to see full sized image
Photo# 17275 Accession# R2994
Costus varzearum


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17397 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17398 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17399 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17400 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17401 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17402 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17403 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17404 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17405 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17406 Accession# R3282
Costus varzearum 'Maldonado' form


Costus varzearum 'Maldonado' form - Click to see full sized image
Photo# 17407 Accession# R3282
Costus varzearum 'Maldonado' form


CLICK HERE for a detailed botanical description and identification key for this species (opens in new window).
CLICK HERE to see a description of accession #R1394 . (opens in new window).
CLICK HERE to see a description of accession #R3282 . (opens in new window).
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PLANT FAMILY: Costaceae
BOTANICAL NAME: Costus varzearum
FORMAL SCIENTIFIC NAME: Costus varzearum Maas
STATUS :Accepted
CONTINENT: Neotropical
SYNONYMS:


BOTANICAL NOTES:
This is an accepted neo-tropical Costus species described in 1976 by Paul Maas. The species was split out from Costus claviger having a longer two-lobed ligule and smaller leaves with a terminal instead of a basal inflorescence. The typical form has dark green wavy leaves with purplish undersides and purplish stems especially at the ligules and petioles. Plant grows to less than one meter tall and is all glabrous. The inflorescence is on the smallish size, green bracts and appendages, red on the covered parts. Flowers are yellow, open labellum with red stripes on the wings.

Distribution is reported only in Brazil (Acre and Amazonas) but also found in adjacent parts of Peru. It grows in varzea forests (seasonally flooded) and thus at low altitudes, under 300 meters. On GBIF only 7 collection records were found indicating this species is somewhat rare in the wild. It has not yet been assessed for the IUCN Red List.

ACCESSION NOTES:
This species is quite common in cultivation and I have 6 accessions, three of which appear to be identical clones.

R1394 was purchased at a local nursery incorrectly tagged as Costus stenophyllus. This collection has been vouchered at the UC Berkeley, Jepsen Herbarium, UC2045810.Other accessions (R2939, R2940, R2984 and R2994) were received in trade, some originating at Glasshouse Works and incorrectly tagged, all identical to R1394. The other plant (R3282) was received from Plant Group Hawaii as Costus varzerarum 'Maldonado' and is believed collected by the late Mark Collins at Puerto Maldonado in Madre de Dios, Peru. This is a distinctly different form with flowers whose labellum folds outward and with slightly shorter ligules and other minor differences from the more common form in cultivation. R3282 has been vouchered at the UC Berkeley, Jepsen Herbarium, UC2045811.

GINGERSRUS CATALOG LISTING:
Costus varzearum-flower This Costus is often incorrectly identified as Costus sanguineus or a few other names. The name comes from its natural habitat in the seasonally flooded (varzea) forests of the Amazon basin. Costus varzearum is distinctive by its wavy leaves with purple undersides and dark green upper sides. The foliage is very attractive and tropical looking. It grows to about 5 feet tall in light shade to part sun. The flowers appear from early summer to fall on terminal inflorescenses with green bracts. They are a soft creamy yellow with bright red markings on the labellums.

It can be planted in filtered shade to part sun (up to about 2 hours direct sun) in rich, moist, organic soil. It is reported hardy to zone 9 but may be a bit hardier. I have left it outdoors in my Tallahassee zone 8B garden and it has returned just fine in milder winters. It is important not to keep the soil wet during dormancy, or the rhizomes will rot.


Costus varzearum

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