Grammatophyllum martae (Marta's Gramamatophyllum)

Scientific Name

Grammatophyllum martae Quisumb. ex Valmayor & D.Tiu

Common Names

Marta's Gramamatophyllum

Scientific Classification

Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Cymbidieae
Subtribe: Cymbidiinae
Genus: Grammatophyllum

Flower

Color: Green with dark brown
Bloom Time: Summer

Description

Grammatophyllum martae is a species of orchid with large pseudobulbs, up to 9 inches (22.5) cm tall, and up to 4 inches (10 cm) in diameter. Leaves are at the pseudobulb's apex, up to 2 feet (60 cm) long and up to 4 inches (10 cm) wide. Inflorescences reach up to 5 feet (1.5 m) in length and carry about 80 flowers. The flowers are dark brown with yellow markings and up to 1.8 inches (4.5 cm) across.

Grammatophyllum martae - Marta's Gramamatophyllum
Photo via orchids.la.coocan.jp

Hardiness

USDA hardiness zone 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).

How to Grow and Care

Grammatophyllums grow well in moderate light intensity. Morning sun is best, until about noon. Observation of the leaf structure can be your best guide to the correct light conditions for which a type is particularly suited. Lime green-colored foliage is an indication of proper light. While very attractive, dark green foliage is not conducive to the plant reaching its full blooming potential. Yellow-colored foliage indicates too much light. In very mild climates, most members of this can be grown out of doors, with protection from the hot summer sun and winter colder nights.

The ideal annual temperature range for most members of the genus Grammatophyllum are 75 to 85 °F (24 to 30 °C) during the day and 55 to 60 °F (13 to 16 °C) at night. Plants will tolerate temperatures to 45 °F (10 °C) and up to 100 °F (38 °C) for short periods. At higher temperatures, air circulation and humidity must be increased, or damage can occur. See more at How to Grow and Care for Grammatophyllum.

Origin

It is found only in Negros in the Philippines.

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