Chroomonadaceae

{{short description|Family of cryptomonads}}

{{Use dmy dates|date=September 2024}}

{{automatic taxobox

| image = Chroomonas 355197312.jpg

| image_caption = Chroomonas sp.

| taxon = Chroomonadaceae

| authority = Clay, Cugrens & Lee 1999

| subdivision_ranks = Genera

| subdivision =

• Chroomonas
• Falcomonas
• Komma
• Hemiselmis
• Planonephros
• Nodeana
• Protochrysis

| synonyms =

• Falcomonadaceae Daugbjerg 2018
• Hemiselmidaceae Butcher 1967 ex Silva 1980
• Planonephraceae Christensen 1967
• Senniaceae Skuja 1948

}}

Chroomonadaceae is a family of cryptomonads first recognized by Clay et al in 1999 as including genera Chroomonas, Falcomonas, and Komma.{{Cite journal|last1=Clay|first1=Brec|last2=Kugrens|first2=Paul|last3=Lee|first3=Robert|date=October 1999|title=A revised classification of Cryptophyta|journal=Botanical Journal of the Linnean Society|volume= 131| issue = 2|pages=131–151|via=Oxford Academic|doi=10.1111/j.1095-8339.1999.tb01845.x|doi-access=free}} Following a molecular phylogenic study in 2002, Hemiselmis was also placed within the Chroomonadaceae.{{Citation |vauthors=Deane et al |year=2002 |title=Cryptomonad Evolution: Nuclear 18S rDNA phylogeny versus cell morphology and pigmentation |journal=Journal of Phycology |volume=38 |issue=6 | pages=1236–1244 | doi=10.1046/j.1529-8817.2002.01250.x |display-authors=etal}} Today, the family is generally recognized as sister to the Pyrenomonadaceae.

They are one of only two groups of cryptomonads (alongside Rhinomonas) to lack a rhizostyle. They are also distinguished by the lack of a cleavage furrow and the presence of several phycocyanins and phycoerythrins not observed in any other cryptomonad taxa.{{Citation |vauthors=Laza-Martinez A |year=2012 |title=Urgorri Complanatus Gen. Et Sp. Nov. (Cryptophyceae) A Red-Tide-Forming Species in Brackish Waters |journal=Journal of Phycology |volume=48 |issue=2 | pages=423–435 | doi=10.1111/j.1529-8817.2012.01130.x|pmid=27009732 }}