Question: Which has more genus in a family, Stachyurus or Ericaceae?

Context paragraphs:
Stachyurus: Stachyurus is the only genus in the flowering plant family Stachyuraceae, native to the Himalayas and eastern Asia.  They are deciduous shrubs or small trees with pendent racemes of 4-petalled flowers which appear on the bare branches before the leaves.  The plants have leaves with serrate margins.  Stachyuraceae contains a single genus with eight species.

Andersonia sprengelioides: Andersonia sprengelioides is a species of shrub that grows in the south west corner of Western Australia.  It was originally described by the botanist Robert Brown in 1810 and retains its original name.  The genus "Andersonia" is classified in the Ericaceae, or in the family Epacridaceae (which is subsumed into Ericaceae by most authors).

Chrysomyxa: Chrysomyxa is a genus of rust fungi in the family Coleosporiaceae.  The genus, widespread in the Northern Hemisphere, contains about 23 species.  Rust fungi in the genus "Chrysomyxa" Unger occur in boreal forests of the northern hemisphere on Pinaceae, (mostly "Picea" A. Dietr.) , and most species alternate to angiosperm hosts in the Ericaceae (Crane 2001).

Dermatophyllum: Dermatophyllum is a genus of three or four species of shrubs and small trees in the subfamily Faboideae of the pea family, Fabaceae.  The genus is native to southwestern North America from western Texas to New Mexico and Arizona in the United States, and south through Chihuahua, Coahuila and Nuevo León in northern Mexico.  Members of the genus are commonly known as mescalbean, mescal bean or frijolito.  One of the common names of "Dermatophyllum secundiflorum" is Texas mountain laurel, although the name mountain laurel also refers to the very dissimilar and unrelated genus "Kalmia" (family Ericaceae) and the name laurel refers generally to plants in the unrelated order Laurales.

Gaultheria: Gaultheria is a genus of about 135 species of shrubs in the family Ericaceae.  The name commemorates Jean-François Gauthier of Quebec, an honour bestowed by the Scandinavian Pehr Kalm in 1748 and taken up by Carl Linnaeus in his "Species Plantarum ".  These plants are native to Asia, Australasia and North and South America.  In the past, the Southern Hemisphere species were often treated as the separate genus "Pernettya", but no consistent reliable morphological or genetic differences support recognition of two genera, and they are now united in the single genus "Gaultheria".

Pyrola: Pyrola (syn.  "Pirola" ) is a genus of evergreen herbaceous plants in the family Ericaceae.  Under the old Cronquist system it was placed in its own family Pyrolaceae, but genetic research showed it belonged in the family Ericaceae.  The species are commonly known as wintergreen, a name shared with several other related and unrelated plants (see wintergreen for details).  They are native to northern temperate and Arctic regions.

Leptecophylla: Leptecophylla is a genus of flowering plants in the family Ericaceae.  The genus is native to southeastern Australia, New Zealand, Papua New Guinea and the Pacific Islands.  Some species in this genus were formerly classified within the genera "Cyathodes", "Lissanthe", "Styphelia" and "Trochocarpa".

Epacris: Epacris is a genus of about 35–40 species of flowering plants in the family Ericaceae.  It was formerly treated in a closely related but separate family Epacridaceae, but the various genera within Epacridaceae including "Epacris" have been revised in their relationships to each other and brought under the common umbrella of the Ericaceae.  The genus "Epacris" is native to eastern and southeastern Australia (southeast Queensland south to Tasmania and west to southeast South Australia), New Caledonia and New Zealand.  The species are known as heaths or Australian heaths.

Exobasidium: Exobasidium is a genus of fungi in the Exobasidiaceae family.  The genus has a widespread distribution, especially in northern temperate regions, and contains about 50 species.  Many of the species in this genus are plant pathogens that grow on Ericaceae.

Ericaceae: The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acid and infertile growing conditions.  The family is large, with c. 4250 known species spread across 124 genera, making it the 14th most species-rich family of flowering plants.  The many well-known and economically important members of the Ericaceae include the cranberry, blueberry, huckleberry, rhododendron (including azaleas), and various common heaths and heathers ("Erica", "Cassiope", "Daboecia", and "Calluna" for example).

Supporting paragraphs: Stachyurus Ericaceae
Answer: Ericaceae