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How to Identify Platycerium willinckii

 

Photo: DavesGarden.com

 

Platycerium willinckii are one of the more common platyceriums, however most people assume they are a bifurcatum.  The P. willinckii is a member of the bifurcatum complex and at first glance look like a bifurcatum.  The bifurcatum complex consists of; bifurcatum, hillii, veitchii and willinckii.  The P. bifurcatum generally has a narrow fertile frond.  The P. hillii has a wide fertile frond and a rounded shield frond.  The P. veitchii is conditioned to be a full sun platycerium and has a grayish green color.  The P. willinckii has four unique traits the others do not have.

 

The most widely recognized trait that most collectors look for to identify the P. willinckii is the way the fertile frond droop down from the bud.  On many cultivars, this is true, but is is not a universal trait for P. willinckii.  There are numerous cultivars where the fertile frond grow upward then droop down with age.  This is probably a result of cross pollination with others in the bifurcatum complex.

 

Second the fertile fronds can be narrow or wide like the P. bifurcatum and P. hillii.  But as they grow out of the bud area they grow edgewise and as they get more mature they rotate to a horizontal growth pattern to take advantage of sunlight.

 

Third, the P. bifurcatum and P. hillii have 6 fertile fronds growing out of the bud.  But a mature P. willinckii has 12 fertile fronds growing out of the bud.  The large number of fertile fronds provides a full bouquet of fronds.

 

And forth, the shield fronds turn a rich brown providing a nice contrast between the shield fronds and the fertile fronds.

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