Santalales

Many of the members of the order are parasitic plants, mostly hemiparasites, able to produce sugars through photosynthesis, but tapping the stems or roots of other plants to obtain water and minerals; some (e.g. Arceuthobium) are obligate parasites, have low concentrations of chlorophyll within their shoots (1/5 to 1/10 of that found in their host's foliage), and derive the majority of their sustenance from their hosts' vascular tissues (water, micro- and macronutrients, and sucrose). Most have seeds without testae (seed coats), which is unusual for flowering plants. == Classification ==

The APG IV system of 2016 includes seven families. order Saxifragales :* family Dipentodontaceae – now in order Huerteales in APG IV :* family Olacaceae :* family Opiliaceae :* family Santalaceae :* family Misodendraceae :* family Loranthaceae :* family Viscaceae - sunk into Santalaceae s.l. in the seven-family system :* family Eremolepidaceae - sunk into Santalaceae s.l. in the seven-family system :* family Balanophoraceae ==Gallery of type genera==

Balanophora indica2.jpg |alt=flowers |Balanophora fungosa Loranthus europaeus (Riemenmistel) IMG 9783.jpg| alt=flowers and foliage |Loranthus europaeus Misodendrum punctulatum.jpg |alt=flowers and foliage |Misodendrum punctulatum Olax imbricata Roxb. (8503288374).jpg |alt=flowers and foliage |Olax imbricata Opilia amentacea.jpg |alt=botanical illustration |Opilia amentacea Santalum album - Indian Botanic Garden - Howrah 2013-03-31 5743.JPG |alt=foliage |Santalum album Schoepfia brasiliensis A.DC. - Flickr - Alex Popovkin, Bahia, Brazil (11).jpg |alt=foliage |Schoepfia brasiliensis ==References==