Xerophyte

Central Spines

0-4, spreading above the radials or crosswise, brownish yellow to black 20-40 mm long.

Seeds

1.2-1.5 mm long, 1.0 to 1.2 thick, black. Testa conspicuously warty.

Description

Echinocereus matudaeSN|7140]]SN|7171]] (syn

Roots

fibrous branched.

Derivation of Name

This member of the Cactaceae family was given this name in honour of its collector Prof. Eizi Matuda. Matuda's echinocereus.

Flowers

Purple-red. Buds red, round, naked or slightly spined. Flower short tubular 50-70 long, to 50cm in diameter, bright to dark red, throat yellowish. Flower tube 20-30 mm long, 10-25 mm in diameter, reddish. Pericarpel 15-20 mm long, 10-15 mm in diameter, green. Spines 5-10 up to 10 mm long yellowish. Wool up to 2 long. Nectar chamber 7-9, 1.5-2.5 in diameter. Filaments 30-50 mm long, white, purple at apex. Anthers pink-yellow. Style greenish-white, up to 50 mm long, and 1-1.5 in diameter. Stigma lobes 7-9, light green 4-7 mm long.

Chromosome Number

Diploid 2n = 22.

Ribs

6-8, broad and obtuse, 2-3 cm high, (1.5)3-4(-5) cm wide at base, sinuatae, slightly tuberculate, perpendicular, diverging.

Stem

Cylindrical, erect, very thick, green to dark green 10-30(-50) cm tall, 9-12 cm in diameter.

Radial Spines

7-11, needle-like, stiff, straight, yellow to light brown, becoming grey, 5-30 mm long,

Fruits

Spherical to ovoidal, green, tinged red-maroon when ripe, about 25-35 mm long, and 15-25 mm in diameter. Ripening 3-4 month after anthesis. Pulp white.

Areoles

Round to oval 7-10 mm long, 5-7 mm wide, 15-25 mm apart.