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Description of Haematococcus

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Cells solitary, ovoid to ellipsoidal, with broadly rounded ends; protoplast separated from cell wall to which it is connected by thin branched or unbranched cytoplasmic strands; space between cell wall and protoplast filled with watery mucilage; 2 equal flagella; chloroplast more or less cup-shaped, sometimes reticulate; chloroplast green but cells often appear orange or reddish due to extraplastidial carotenoid (haema-tochrome or astaxanthin) pigments; pyrenoid(s) 1, 2 or several; eyespot large, hardly visible in haematochrome-containing cells; nucleus more or less central; contractile vacuoles several to many (up to 60); asexual reproduction by formation of usually 4 (rarely 2 or 8) zoospores; sexual reproduction isogamous, usually 16, 32 or 64 gametes formed per cell, after fusion producing thick-walled zygotes; aplanospores, palmellae and amoeboid stages known; nutrition phototrophic, or chemo- or photo-organotrophic; species characteristic of ephemeral rainwater pools on bare rock and in artificial basins (e.g., ornamental ponds).
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Haematococcus

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 src=
Drawing of Haematococcus pluvialis[1]

Haematococcus is a genus of algae in the family Haematococcaceae. Members of this group are the common cause for the pink color found in birdbaths.[2]

References

  1. ^ Frank Shipley Collins. The Green Algae of North America, Volume II of Tufts College Studies, Published by Tufts College, 1909, pp 79-480. From Plate II.
  2. ^ See the NCBI webpage on Haematococcus. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}

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Haematococcus: Brief Summary

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 src= Drawing of Haematococcus pluvialis

Haematococcus is a genus of algae in the family Haematococcaceae. Members of this group are the common cause for the pink color found in birdbaths.

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