Question: Are Physoplexis and Alsobia both native to North America?

full_context: Document 1: Salvia gesneriflora: Salvia gesneriflora (sometimes spelled Salvia gesneriiflora) is a herbaceous perennial or subshrub native to mountainous provinces of the Sierra Madre Oriental in Mexico, growing at 7,500-10,000 ft elevation. It was named in honor of 15th century Swiss botanist Conrad Gessner, for whom the genus "Gesneria" and family Gesneriaceae are also named. The long tubular flowers of this salvia resemble "Gesneria" flowers. It is a popular ornamental plant.
Document 2: Costus osae: Costus osae is a rare member of the Costus family. One of many rare tropical plants in the Costus family, "Costus osae" is a species native to Costa Rica described in 1997 . It has also been reported from Colombia.
Document 3: Gesneria: Gesneria is a genus of approximately 50 species in the flowering plant family Gesneriaceae. Except for two or three odd South American species, all are native to islands of the Caribbean. The genus is classified in the tribe Gesnerieae along with the genera "Bellonia", "Pheidonocarpa", and "Rhytidophyllum". "Gesneria" species are usually woody shrubs or subshrubs, and (with the closely related "Rhytidophyllum") are unusual in the family in having alternately (rather than decussately) arranged leaves. A complete list of the accepted species and their synonyms can be found in the Smithsonian Institution's World Checklist of Gesneriaceae.
Document 4: Physoplexis: Physoplexis comosa, the tufted horned rampion is a species of flowering plant in the family Campanulaceae, native to alpine Europe. It is the only species in its genus, and was formerly included in "Phyteuma".
Document 5: Guzmania: Guzmania (tufted airplant) is a genus of over 120 species of flowering plants in the botanical family Bromeliaceae, subfamily Tillandsioideae. They are mainly stemless, evergreen, epiphytic perennials native to Florida, the West Indies, southern Mexico, Central America, and northern and western South America. They are found at altitudes of up to 3500 m in the Andean rainforests.
Document 6: Campanula spicata: Campanula spicata, common name the spiked bellflower, is a herbaceous biennial or perennial plant of the genus "Campanula" belonging to the family Campanulaceae.
Document 7: Alsobia: Alsobia is a genus of flowering plants in the family Gesneriaceae, native to Mexico, Guatemala and Costa Rica.
Document 8: Bessera: Bessera is a genus of Mexican plants in the cluster lily subfamily within the asparagus family. It is a small genus of 3 known species of mostly herbaceous flowering plants with corms. They have flowers with petals and petaloid sepals (tepals) with compound pistils.
Document 9: Phygelius: Phygelius, common names Cape fuchsia or Cape figwort, is a genus of flowering plants in the Scrophulariaceae family, native to wet slopes and banks in southern Africa. They are evergreen shrubs often treated as perennials in colder climates. They bear many pendent tubular flowers over a long period in summer, in shades of white, yellow and red. The vague similarity of the blooms to fuchsias has led to the common name Cape fuchsia, though they are not closely related.
Document 10: Campanula raineri: Campanula raineri (Rainer's bellflower, Rainer's harebell) is a species of flowering plant in the genus "Campanula" of the family Campanulaceae, native to the Swiss and Italian Alps. It is a low-growing herbaceous perennial growing 5 - tall by up to 20 cm wide, with pale lilac bell-shaped flowers in summer. It is suitable for cultivation in the alpinum or rock garden. It spreads by underground runners.
Document 11: Crepis paludosa: Crepis paludosa, the marsh hawk's-beard, is a European species of plants in the dandelion tribe within the sunflower family. It is widespread across much of Europe with isolated populations in Iceland, the Ural Mountains, and the Caucasus.
Document 12: Campanula rapunculoides: Campanula rapunculoides, known by the common names creeping bellflower, or rampion bellflower, is a perennial herbaceous plant of the genus "Campanula", belonging to the family Campanulaceae.
Document 13: Campanula poscharskyana: Campanula poscharskyana (Serbian bellflower, trailing bellflower) is a semi-evergreen trailing perennial, valued for its lavender-blue star-shaped flowers, native to the Dinaric Alps in former Yugoslavia.
Document 14: Campanula portenschlagiana: Campanula portenschlagiana syn. "C. muralis", is a species of flowering plant in the family Campanulaceae, native to the Dalmatian Mountains in Croatia. It is a vigorous, low-growing, mound-forming evergreen perennial with deep purple flowers in summer. Common names include Dalmatian bellflower, Adria bellflower and wall bellflower.
Document 15: Beschorneria: 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.
ground_truth: no