Question: What do Erica and Beschorneria have in common?

Context articles: Ericaceous bed
Hankley Common
Erica cerinthoides
Guilded Age
Ericaceae
Erica lusitanica
Erica
Beschorneria

An Ericaceous bed is a bed (or garden) with acidic and often nutrient-poor soil such as Ericaceous compost and different types of peat.
 The pH of the soil is typically between 4.5 and 6.
 The purpose is typically to grow a number of garden plants which require (or thrives best in) acidic soil.
 Such plants commonly include heathers (Erica, Calluna and more) and Rhododendrons. Another group of plants common in ericaceous beds are those belonging to the boreal coniferous forest, e.g. Vacciniums.
 A number of orchids also grow well in nutrient-poor soil.
Hankley Common is a common near Elstead, Surrey, England.
 It is an area of heathland with sandy infertile soil.
 The dry areas are covered in common heather ("Calluna vulgaris") and bell heather ("Erica cinerea") with patches of bracken ("Pteridium aquilinum")
Erica cerinthoides is a species of heath native to South Africa (the Cape Provinces, the Free State, KwaZulu-Natal, the Northern Provinces), Lesotho and Swaziland.
 Common names include fire erica, fire heath, red hairy heath, rooihaartjie or klipheide.
 Throughout its range the species shows marked variation in habit, flower characteristics and hairiness .
 A form with white flowers is found in Swaziland and the South African province of Mpumalanga while the variety "E. cerinthoides" var.
 "barbertona" has shorter flowers.
Guilded Age is a 2009 fantasy webcomic about five heroes who have come together to work for a common goal: three squares and a warm bed.
 Its narrative presents a conflict between warring coalitions based on centuries-old feuds, but the writers claim they intend to "try to focus on what's important."
 The webcomic is a collaboration of T Campbell, Erica Henderson, and Phil Kahn.
 T Campbell, the co-writer, has described "Guilded Age" as a "fantasy dramedy-adventure" Henderson stepped down as the primary artist of the strip at the end of November 2010, with art duties being taken over by John Waltrip.
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).
Erica lusitanica is a species of flowering plant in the family Ericaceae, known by the common names Portuguese heath and Spanish heath.
 It is native to Spain, Portugal and southwestern France.
 It is named for Lusitania, a historical region encompassing most of modern Portugal and parts of western Spain.
Erica is a genus of roughly 860 species of flowering plants in the family Ericaceae.
 The English common names "heath" and "heather" are shared by some closely related genera of similar appearance.
 The genus "Calluna" was formerly included in "Erica" – it differs in having even smaller scale-leaves (less than 2–3 mm long), and the flower corolla consisting of separate petals.
 "Erica" is sometimes referred to as "winter (or spring) heather" to distinguish it from "Calluna" "summer (or autumn) heather".
Beschorneria is a genus of succulent plants belonging to the family Asparagaceae, subfamily Agavoideae, native to semi-arid areas of Mexico and Central America.
 They are generally large evergreen perennials forming clumps of grey-green leaves, with tall flower-spikes to 1.5 m .
 Marginally hardy, they may require winter protection in areas subject to frost.