Photo P.K. Loc
logo
The Cycad Pages
Cycas multifrondis


Photo Ken Hill
Photo Ken Hill

Description:

Stems acaulescent, 10-30 cm diam. at narrowest point; 2-5 leaves in crown.

Leaves bright green, semiglossy, 200-500 cm long, slightly keeled to flat (not keeled) in section (opposing leaflets inserted at 120-180° on rachis), with 40-80 leaflets, with white and orange tomentum shedding as leaf expands; rachis usually terminated by paired leaflets. Petiole 110-160 cm long (35-50% of total leaf), petiole glabrous, spinescent for 90-100% of length. Basal leaflets not gradually reducing to spines.

Median leaflets dichotomously branched (three times), strongly discolorous, 300-600 mm long, 18-25 mm wide, inserted at 45-70° to rachis, decurrent for 10-15 mm, narrowed to 3-4 mm at base (to 14-20% of maximum width), 60-95 mm apart on rachis; median leaflets section flat; margins flat; apex softly acuminate, not spinescent; midrib raised above, flat below.

Cataphylls narrowly triangular, soft, pilose, 55-90 mm long, articulated.

Pollen cones fusiform, yellow or cream, 35-55 cm long, 6-8 cm diam.; microsporophyll lamina soft, not dorsiventrally thickened, 17-28 mm long, 13-16 mm wide, fertile zone 14-25 mm long, sterile apex 2-3 mm long, level, apical spine absent.

Megasporophylls 7-11 cm long, brown-tomentose; ovules 2-6, glabrous; lamina ovate, 35-100 mm long, 25-50 mm wide, deeply pectinate, with 12-15 soft lateral spines 18-50 mm long, 2-3 mm wide, apical spine distinct or not distinct from lateral spines, 15-70 mm long, 3-8 mm wide at base.

Seeds flattened-ovoid, 25 mm long, 20 mm wide; sarcotesta yellow, not pruinose, 2 mm thick; fibrous layer absent; sclerotesta verrucose. Spongy endocarp absent.


The Cycad Pages

© 1998-2012 Royal Botanic Gardens Sydney
Written and maintained by Ken Hill 1998-2010
Maintained by Leonie Stanberg and Dennis Stevenson 2010-2012
This site is currently not being maintained